Basic Information

Faculty

• Faculty of Engineering

Academic Degree

• Master of Science(Kyoto Univ.)
• Doctor of Science(Kyoto Univ.)

Research History

• From 1993, To 1999

  Mitsubishi Electric Co., 先端技術総合研究所, Researcher
• From 2014, To Present

  Kyoto University, Graduate School of Engineering, 教授
• From 2007, To 2014

  Hokkaido University, Research Institute for Electronic Science, 教授
• From 2000, To 2007

  Hokkaido University, Research Institute for Electronic Science, 助教授
• From 1999, To 2000

  Hokkaido University, Research Institute for Electronic Science, 講師

Profile

• Profile

  1993 京都大学大学院理学研究科物理学第一専攻修士課程修了

  
  

  1993-99 三菱電機中央研究所 研究員

  
  

  1999 北海道大学電子科学研究所講師

  
  

  2000 同助教授

  
  

  2007-2014 同教授

  
  

  2014-現在 京都大学大学院工学研究科教授

  
  

  兼職

  
  

  1995-1999 新技術事業団　さきがけ研究「場と反応」

  
  

  1997-1998 スタンフォード大学　客員研究員

  
  

  2001-2005 科学技術振興機構　さきがけ研究「光と制御」

  
  

  2008-2024 大阪大学産業科学研究所招へい教授

Language of Instruction

• English

ID,URL

• J-Global ID

  200901088596143299

• External link

  http://kaken.nii.ac.jp/ja/r/80321959

Website(s) (URL(s))

• http://qip.kuee.kyoto-u.ac.jp/index.html

researchmap URL

• https://researchmap.jp/shigeki-takeuchi

Research

Research Topics, Overview of the research

• Research Topics

  Research on quantum technologies (quantum information and quantum sensing ) based on quantum optics and nano photonics

• Overview of the research

  光子や電子などの「量子」は、古典的な粒子とは全く異なる振る舞いをします。 それらの「量子状態」を制御することで、 従来のコンピュータでは時間がかかりすぎ解くことのできない問題を解く「量子コンピュータ」や、 観測出来なかった現象を観察する「量子計測」などの実現が期待されています。これらに関し、次の様な研究を進めています。
  光量子情報：　 光量子コンピュータ・光量子シミュレータの実現を目指す研究です。 私たちはこれまでに、光子と光子の間の「量子干渉」を駆使した世界最大級の光量子回路を実現してきました。 現在、集積光量子回路の研究も推進、光子を用いた量子もつれの研究を行っています。
  光量子計測：光子ひとつ一つを操った「量子光」を用いることで、従来の光計測の感度や分解能を飛躍的に高める研究を進めています。 現在、量子光コヒーレンストモグラフィや赤外量子吸収計測の研究を進めています。
  ナノフォトニクス：　半導体量子ドットやダイヤモンドの極小微粒子などの単一発光体（人工原子）から、高効率で光子を光ファイバへと入出力するために、共振器内蔵ナノ光ファイバの実現をおこなってきました。将来的には光量子メモリなどのデバイスや、量子センサへの応用が期待されます。
  

Research Interests

• 量子情報処理プロジェクト
• 励起子
• レーザーマニピュレーション
• ラビ振動
• 表面弾性波
• 光源技術
• 量子通信中継機
• ナノ微粒子
• フォトン
• ナノテクノロジー
• 単一微小液滴
• 放射圧
• パラメトリック瑩光
• ベルの不等式
• パウメトリック螢光
• 量子暗号
• 非局所性
• 応用光学
• 量子情報処理
• 量子もつれあい
• 量子位相ゲート
• フォトニックファイバ
• 量子光学
• FDTD法
• パラメトリック螢光
• 単一光子
• 量子通信
• 量子コンピュータ
• パラメトリック蛍光
• 量子情報
• 光子

Research Areas

• Natural sciences, Semiconductors, optical and atomic physics
• Nanotechnology/Materials, Optical engineering and photonics

Papers

• Photonic Quantum Metrologies Using Photons: Phase Super-sensitivity and Entanglement-Enhanced Imaging

  Shigeki Takeuchi

  Lecture Notes in Physics, 2016

  
• Discrete transition in trapped particle position by interference effects

  Takashima, Hideaki; Chiba, Akito; Hideki Fujiwara; Jun-ichi Hotta; Shigeki Takeuchi; Keiji Sasaki

  Technical Digest (Nonlinear Optics: Materials, Fundamentals and Applications), 2004

  
• Highly Efficient Broadband Frequency Entangled Photon Pair Sources for Optical Quantum Applications

  Bo Cao; Kyohei Hayama; Mamoru Hisamitsu; Katsuhiko Tokuda; Sunao Kurimura; Ryo Okamoto; Shigeki Takeuchi

  Conference on Lasers and Electro-Optics, 2020

  
• Selective Anti-Stokes Excitation of a Single Defect Center in Hexagonal Boron Nitride

  Yudai Okashiro; Hideaki Takashima; Konosuke Shimazaki; Kazuki Suzuki; Yu Mukai; Igor Aharonovich; Shigeki Takeuchi

  ACS Photonics, 05 Sep. 2024, Peer-reviewed, Last author, Corresponding author

  
• A detailed analysis on the fidelity of quantum teleportation using photons

  Kenji Tsujino; Keiji Sasaki; Shigeki Takeuchi

  Proceedings of the 7th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology Isom-Tokyo '01, 2002, Peer-reviewed

  
• Investigation of the spectroscopic properties of single defects in hexagonal boron nitride

  Andreas W. Schell; Hideaki Takashima; Toan Tron Tran; Igor Aharonovich; Mikael Svedendahl; Romain Quidant; Shigeki Takeuchi

  2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, 01 Jun. 2019

  
• High-spectral-resolution quantum Fourier-transform infrared spectroscopy with pulsed laser excitation

  Jasleen Kaur; Yu Mukai; Ryo Okamoto; Shigeki Takeuchi

  Physical Review Applied, 07 Oct. 2024, Peer-reviewed, Last author, Corresponding author

  
• Quantum infrared attenuated total reflection spectroscopy

  Torataro Kurita; Yu Mukai; Ryo Okamoto; Masaya Arahata; Toshiyuki Tashima; Hiroshi Ota; Katsuhiko Tokuda; Shigeki Takeuchi

  Physical Review Applied, 28 Jan. 2025, Peer-reviewed, Last author, Corresponding author

  
• Room-temperature hyperpolarization of polycrystalline samples with optically polarized triplet electrons: pentacene or nitrogen-vacancy center in diamond?

  Koichiro Miyanishi; Takuya F. Segawa; Kazuyuki Takeda; Izuru Ohki; Shinobu Onoda; Takeshi Ohshima; Hiroshi Abe; Hideaki Takashima; Shigeki Takeuchi; Alexander I. Shames; Kohki Morita; Yu Wang; Frederick T.-K. So; Daiki Terada; Ryuji Igarashi; Akinori Kagawa; Masahiro Kitagawa; Norikazu Mizuochi; Masahiro Shirakawa; Makoto Negoro

  Magnetic Resonance, 17 Feb. 2021, Peer-reviewed

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• Evaluation of single silicon vacancy centers in nanodiamonds created by ion implantation at cryogenic temperatures

  Konosuke Shimazaki; Kazuki Suzuki; Kengo Sakamoto; Yudai Okashiro; Hiroshi Abe; Takeshi Ohshima; Hideaki Takashima; Shigeki Takeuchi

  New Journal of Physics, 24 Sep. 2024, Peer-reviewed, Last author, Corresponding author

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• Locally observable conditions for the successful implementation of entangling multi-qubit quantum gates

  Holger F. Hofmann; Ryo Okamoto; Shigeki Takeuchi

  Proceedings of the 8th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2005, 2006

  
• Broadband spontaneous parametric fluorescence toward high-resolution quantum optical coherence tomography

  Masayuki Okano; Ryo Okamoto; Akira Tanaka; Shanthi Subashchandran; Shutaro Ishida; Norihiko Nishizawa; Shigeki Takeuchi

  Optics InfoBase Conference Papers, 2011

  
• Tapered fiber coupling of single defect centers in two-dimensional materials

  Andreas W. Schell; Hideaki Takashima; Toan Tron Tran; Igor Aharonovich; Shigeki Takeuchi

  2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, 01 Jun. 2019

  
• Highly efficient ultra-broadband entangled photon-pair generation using a chirped PPSLT ridge waveguide

  Bo Cao; Ryo Okamoto; Mamoru Hisamitsu; Katsuhiko Tokuda; Shigeki Takeuchi

  2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, 01 Jun. 2019

  
• Determination of the dipole orientation of a single defect in hexagonal boron nitride using vector beam

  Hideaki Takashima; Keita Ishihara; Hironaga Maruya; Toshiyuki Tashima; Andreas W. Schell; Toan Trong Tran; Igor Aharonovich; Shigeki Takeuchi

  Optics InfoBase Conference Papers, 2019

  
• Ultrabroadband spontaneous parametric fluorescence in 800 nm region toward ultrahigh-resolution quantum optical coherence tomography

  Masayuki Okano; Hwan Hong Lim; Ryo Okamoto; Akira Tanaka; Yuichi Nagamatsu; Norihiko Nishizawa; Sunao Kurimura; Shigeki Takeuchi

  Frontiers in Optics, FiO 2014, 14 Oct. 2014

  
• Coupling quantum dots to a nanofiber Bragg cavity

  Yasuko Oe; Andreas W. Schell; Hideaki Takashima; Syunya Kamioka; Masazumi Fujiwara; Oliver Benson; Shigeki Takeuchi

  Optics InfoBase Conference Papers, 21 Jul. 2014

  
• Ultra-broadband quantum infrared spectroscopy

  Tashima, Toshiyuki; Mukai, Yu; Arahata, Masaya; Oda, Norihide; Hisamitsu, Mamoru; Tokuda, Katsuhiko; Okamoto, Ryo; Takeuchi, Shigeki

  Optica, 20 Jan. 2024, Peer-reviewed, Last author, Corresponding author

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• Realization of photon correlations beyond the linear optics limit

  Geobae Park; Issei Matsumoto; Takayuki Kiyohara; Holger F. Hofmann; Ryo Okamoto; Shigeki Takeuchi

  Science Advances, 22 Dec. 2023, Peer-reviewed, Last author, Corresponding author

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• Spectral domain nonlinear quantum interferometry with pulsed laser excitation

  Jasleen Kaur; Yu Mukai; Ryo Okamoto; Shigeki Takeuchi

  Physical Review A, 22 Dec. 2023, Peer-reviewed, Last author, Corresponding author

  
• Impact of the oxidation temperature on the density of single-photon sources formed at SiO2/SiC interface

  Mitsuaki Kaneko; Hideaki Takashima; Konosuke Shimazaki; Shigeki Takeuchi; Tsunenobu Kimoto

  APL Materials, 27 Sep. 2023, Peer-reviewed, Last author, Corresponding author

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• Non-collinear generation of ultra-broadband parametric fluorescence photon pairs using chirped quasi-phase matching slab waveguides

  Bo Cao; Kyohei Hayama; Shun Suezawa; Mamoru Hisamitsu; Katsuhiko Tokuda; Sunao Kurimura; Ryo Okamoto; Shigeki Takeuchi

  Optics Express, 29 Jun. 2023, Peer-reviewed, Last author, Corresponding author

  
• Numerical analysis of the ultra-wide tunability of nanofiber Bragg cavities

  Hideaki Takashima; Andreas W. Schell; Shigeki Takeuchi

  Optics Express, 11 Apr. 2023, Peer-reviewed, Last author, Corresponding author

  
• Spatial separation of collinearly emitted broadband frequency-correlated photon pairs

  Yuki Kamei; Cao Bo; Ryo Okamoto; Shigeki Takeuchi

  Physical Review A, 10 Jan. 2023, Peer-reviewed, Last author, Corresponding author

  
• Experimental realization of an optical entanglement filter

  Ryo Okamoto; L. Jeremy O'brien; F. Holger Hofmann; Tomohisa Nagata; Keiji Sasaki; Shigeki Takeuchi

  CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009, Peer-reviewed

  
• Optimizing the coupling efficiency of spontaneous parametric down-conversion photon pairs into single-mode fibers

  Nicolas Schwaller; Geobae Park; Ryo Okamoto; Shigeki Takeuchi

  Physical Review A, 28 Oct. 2022, Peer-reviewed, Last author, Corresponding author

  
• High-depth-resolution imaging of dispersive samples using quantum optical coherence tomography

  Kyohei Hayama; Bo Cao; Ryo Okamoto; Shun Suezawa; Masayuki Okano; Shigeki Takeuchi

  Optics Letters, 01 Oct. 2022, Peer-reviewed, Last author, Corresponding author

  
• Wavelength-Tunable Quantum Absorption Spectroscopy in the Broadband Midinfrared Region

  Masaya Arahata; Yu Mukai; Toshiyuki Tashima; Ryo Okamoto; Shigeki Takeuchi

  Physical Review Applied, 07 Sep. 2022, Peer-reviewed, Last author, Corresponding author

  
• Quantum Fourier-transform infrared spectroscopy in the fingerprint region

  Yu Mukai; Ryo Okamoto; Shigeki Takeuchi

  Optics Express, 20 Jun. 2022, Peer-reviewed, Last author, Corresponding author

  
• Anomalous Formation of Irradiation-Induced Nitrogen-Vacancy Centers in 5 nm-Sized Detonation Nanodiamonds

  Frederick T.-K. So; Alexander I. Shames; Daiki Terada; Takuya Genjo; Hiroki Morishita; Izuru Ohki; Takeshi Ohshima; Shinobu Onoda; Hideaki Takashima; Shigeki Takeuchi; Norikazu Mizuochi; Ryuji Igarashi; Masahiro Shirakawa; Takuya F. Segawa

  The Journal of Physical Chemistry C, 24 Mar. 2022, Peer-reviewed

  
• Fabrication of Detonation Nanodiamonds Containing Silicon‐Vacancy Color Centers by High Temperature Annealing

  Konosuke Shimazaki; Hiroki Kawaguchi; Hideaki Takashima; Takuya Fabian Segawa; Frederick T.-K. So; Daiki Terada; Shinobu Onoda; Takeshi Ohshima; Masahiro Shirakawa; Shigeki Takeuchi

  physica status solidi (a), 05 Oct. 2021, Peer-reviewed, Last author, Corresponding author

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• Efficient generation of ultra-broadband parametric fluorescence using chirped quasi-phase-matched waveguide devices

  Bo Cao; Mamoru Hisamitsu; Katsuhiko Tokuda; Sunao Kurimura; Ryo Okamoto; Shigeki Takeuchi

  Optics Express, 05 Jul. 2021, Peer-reviewed, Last author, Corresponding author

  
• Creation of silicon vacancy color centers with a narrow emission line in nanodiamonds by ion implantation

  Hideaki Takashima; Atsushi Fukuda; Konosuke Shimazaki; Yusuke Iwabata; Hiroki Kawaguchi; Andreas W. Schell; Toshiyuki Tashima; Hiroshi Abe; Shinobu Onoda; Takeshi Ohshima; Shigeki Takeuchi

  Optical Materials Express, 01 Jul. 2021, Peer-reviewed, Last author, Corresponding author

  
• Wavelength variable generation and detection of photon pairs in visible and mid-infrared regions via spontaneous parametric downconversion

  Masaya Arahata; Yu Mukai; Bo Cao; Toshiyuki Tashima; Ryo Okamoto; Shigeki Takeuchi

  Journal of the Optical Society of America B, 01 Jun. 2021, Peer-reviewed, Last author, Corresponding author

  
• Quantum Fourier-Transform Infrared Spectroscopy for Complex Transmittance Measurements

  Y. Mukai; M. Arahata; T. Tashima; R. Okamoto; S. Takeuchi

  Physical Review Applied, 08 Mar. 2021, Peer-reviewed, Last author

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• Frequency correlated photon generation at telecom band using silicon nitride ring cavities

  Zhenghao Yin; Kenta Sugiura; Hideaki Takashima; Ryo Okamoto; Feng Qiu; Shiyoshi Yokoyama; Shigeki Takeuchi

  Optics Express, 15 Feb. 2021, Peer-reviewed, Last author, Corresponding author

  
• Direct and efficient verification of entanglement between two multimode–multiphoton systems

  Takayuki Kiyohara; Naoki Yamashiro; Ryo Okamoto; Hirotaka Araki; Jun-Yi Wu; Holger F. Hofmann; Shigeki Takeuchi

  Optica, 20 Nov. 2020, Peer-reviewed, Last author, Corresponding author

  
• Loss tolerant quantum absorption measurement

  Ryo Okamoto; Yuta Tokami; Shigeki Takeuchi

  New Journal of Physics, 01 Oct. 2020, Peer-reviewed, Last author

  
• Adaptive quantum state estimation for dynamic quantum states

  Saki Nohara; Ryo Okamoto; Akio Fujiwara; Shigeki Takeuchi

  Physical Review A, 09 Sep. 2020, Peer-reviewed, Last author, Corresponding author

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• Determination of the Dipole Orientation of Single Defects in Hexagonal Boron Nitride

  Hideaki Takashima; Hironaga Maruya; Keita Ishihara; Toshiyuki Tashima; Konosuke Shimazaki; Andreas W. Schell; Toan Trong Tran; Igor Aharonovich; Shigeki Takeuchi

  ACS Photonics, 19 Aug. 2020, Peer-reviewed, Last author, Corresponding author

  
• Identification of the orientation of a single NV center in a nanodiamond using a three-dimensionally controlled magnetic field

  Kazuki Fukushige; Hiroki Kawaguchi; Konosuke Shimazaki; Toshiyuki Tashima; Hideaki Takashima; Shigeki Takeuchi

  Applied Physics Letters, 29 Jun. 2020, Peer-reviewed, Last author

  
• Unified integration scheme using an N × N active switch for efficient generation of a multi-photon parallel state

  Takayuki Kiyohara; Ryo Okamoto; Shigeki Takeuchi

  Optics Express, 08 Jun. 2020, Peer-reviewed, Last author

  
• Broadband generation of photon-pairs from a CMOS compatible device

  K. Sugiura; Z. Yin; R. Okamoto; L. Zhang; L. Kang; J. Chen; P. Wu; S. T. Chu; B. E. Little; S. Takeuchi

  Applied Physics Letters, 01 Jun. 2020, Peer-reviewed

  
• Direct optical excitation of an NV center via a nanofiber Bragg-cavity: a theoretical simulation

  Toshiyuki Tashima; Hideaki Takashima; Shigeki Takeuchi

  Optics Express, 16 Sep. 2019, Peer-reviewed

  
• Realization of high-speed adaptive quantum state estimation

  Saki Nohara; Ryo Okamoto; Koichi Yamagata; Akio Fujiwara; Shigeki Takeuchi

  Japanese Journal of Applied Physics, 17 Jun. 2019, Peer-reviewed

  
• Fabrication of a nanofiber Bragg cavity with high quality factor using a focused helium ion beam.

  Hideaki Takashima; Atsushi Fukuda; Hironaga Maruya; Toshiyuki Tashima; Andreas W Schell; Shigeki Takeuchi

  Optics express, 04 Mar. 2019, Peer-reviewed

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• An on-chip photon-pair source with negligible two photon absorption

  Kenta Sugiura; Ryo Okamoto; Labao Zhang; Lin Kang; Jian Chen; Peiheng Wu; Sai T. Chu; Brent E. Little; Shigeki Takeuchi

  Applied Physics Express, 25 Jan. 2019, Peer-reviewed

  
• Non-contact detection of nanoscale structures using optical nanofiber.

  Hironaga Maruya; Yasuko Oe; Hideaki Takashima; Azusa N Hattori; Hidekazu Tanaka; Shigeki Takeuchi

  Optics express, 21 Jan. 2019, Peer-reviewed

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• これからの発光体制御 マイクロ共振器で光子を操る

  高島秀聡; 竹内繁樹

  パリティ, Aug. 2018

  
• Nonlocal position changes of a photon revealed by quantum routers

  A.C.Elitzur; E.Cohen; R.Okamoto; S.Takeuchi

  Scientific Reports, 16 May 2018, Peer-reviewed

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• Serial-parallel conversion for single photons with heralding sinnals

  Kiyohara, Takayuki; Okamoto, Ryo; Takeuchi, Shigeki

  Optics Express, 25 Dec. 2017, Peer-reviewed

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• Experimental demonstration of adaptive quantum state estimation for single photonic qubits

  Ryo Okamoto; Satoshi Oyama; Koichi Yamagata; Akio Fujiwara; Shigeki Takeuchi

  PHYSICAL REVIEW A, Aug. 2017, Peer-reviewed

  
• Implementation of a quantum controlled-SWAP gate with photonic circuits

  Takafumi Ono; Ryo Okamoto; Masato Tanida; Holger F. Hofmann; Shigeki Takeuchi

  SCIENTIFIC REPORTS, Mar. 2017, Peer-reviewed

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• Coupling Quantum Emitters in 2D Materials with Tapered Fibers

  Shigeki Takeuchi

  ACS Photonics, Mar. 2017, Peer-reviewed

  
• Spectroscopy of single quantum emitters in hexagonal boron nitride using linear and non-linear excitation

  Andreas W. Schell; Hideaki Takashima; Toan Trong Tran; Igor Aharonovich; Shigeki Takeuchi

  Optics InfoBase Conference Papers, 2017, Peer-reviewed

  
• Nanofiber Bragg grating cavities (Conference Presentation)

  Andreas W. Schell; Hideaki Takashima; Hironaga Maruya; Atsushi Fukuda; Shigeki Takeuchi

  LASER RESONATORS, MICRORESONATORS, AND BEAM CONTROL XIX, 2017, Peer-reviewed

  
• Fiber-Coupled Diamond Micro-Waveguides toward an Efficient Quantum Interface for Spin Defect Centers

  Masazumi Fujiwara; Oliver Neitzke; Tim Schröder; Andreas W. Schell; Janik Wolters; Jiabao Zheng; Sara Mouradian; Mohamed Almoktar; Shigeki Takeuchi; Dirk Englund; Oliver Benson

  ACS Omega, 26 Oct. 2017, Peer-reviewed

  
• Manipulation of single nanodiamonds to ultrathin fiber-taper nanofibers and control of NV-spin states toward fiber-integrated lambda-systems

  Masazumi Fujiwara; Kazuma Yoshida; Tetsuya Noda; Hideaki Takashima; Andreas W. Schell; Norikazu Mizuochi; Shigeki Takeuchi

  NANOTECHNOLOGY, Nov. 2016, Peer-reviewed

  
• Realization of multiplexing of heralded single photon sources using photon number resolving detectors

  Takayuki Kiyohara; Ryo Okamoto; Shigeki Takeuchi

  OPTICS EXPRESS, Nov. 2016, Peer-reviewed

  
• Manipulation of single nanodiamonds to ultrathin fiber-taper nanofibers and control of NV-spin states toward fiber-integrated lambda-systems

  Masazumi Fujiwara; Kazuma Yoshida; Tetsuya Noda; Hideaki Takashima; Andreas W. Schell; Norikazu Mizuochi; Shigeki Takeuchi

  NANOTECHNOLOGY, Nov. 2016, Peer-reviewed

  
• Quantum-state anomaly detection for arbitrary errors using a machine-learning technique

  Satoshi Hara; Takafumi Ono; Ryo Okamoto; Takashi Washio; Shigeki Takeuchi

  PHYSICAL REVIEW A, Oct. 2016, Peer-reviewed

  
• Experimental demonstration of a quantum shutter closing two slits simultaneously

  Ryo Okamoto; Shigeki Takeuchi

  SCIENTIFIC REPORTS, Oct. 2016, Peer-reviewed

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• Detailed numerical analysis of photon emission from a single light emitter coupled with a nanofiber Bragg cavity

  Hideaki Takashima; Masazumi Fujiwara; Andreas W. Schell; Shigeki Takeuchi

  OPTICS EXPRESS, Jun. 2016, Peer-reviewed

  
• Non-linear excitation of quantum emitters in hexagonal boron nitride multiplayers

  Shigeki Takeuchi

  APL Photonics, May 2016, Peer-reviewed

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• Optical tracking of picosecond coherent phonon pulse focusing inside a sub-micron object

  Thomas Dehoux; Kenichi Ishikawa; Paul H Otsuka; Motonobu Tomoda; Osamu Matsuda; Masazumi Fujiwara; Shigeki Takeuchi; Istvan A Veres; Vitalyi E Gusev; Oliver B Wright

  Light: Science and Applications, 01 May 2016, Peer-reviewed

  
• Measuring the charge density of a tapered optical fiber using trapped microparticles

  Kazuhiko Kamitani; Takuya Muranaka; Hideaki Takashima; Masazumi Fujiwara; Utako Tanaka; Shigeki Takeuchi; Shinji Urabe

  OPTICS EXPRESS, Mar. 2016, Peer-reviewed

  
• Ultra-widely tunable nanofiber Bragg cavities for quantum optics

  Andreas W. Schell; Hideaki Takashima; Shunya Kamioka; Yasuko Oe; Shinjiro Fujita; Masazumi Fujiwara; Oliver Benson; Shigeki Takeuchi

  2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015, 07 Jan. 2016, Peer-reviewed

  
• Numerical simulation of an ultra-wide tunability and enhanced spontaneous emission of a nanofiber Bragg cavity

  Hideaki Takashima; Andreas W. Schell; Shinjiro Fujita; Yasuko Oe; Syunya Kamioka; Masazumi Fujiwara; Shigeki Takeuchi

  2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015, 07 Jan. 2016, Peer-reviewed

  
• Ultrathin fiber-taper coupling with nitrogen vacancy centers in nanodiamonds at cryogenic temperatures

  Masazumi Fujiwara; Hong-Quan Zhao; Tetsuya Noda; Kazuhiro Ikeda; Hitoshi Sumiya; Shigeki Takeuchi

  Proceedings of SPIE - The International Society for Optical Engineering, 2016, Peer-reviewed

  
• Coupling efficiency of a single light emitter coupled to a nanofiber Bragg cavity

  Hideaki Takashima; Andreas W. Schell; Atsushi Fukuda; Shinjiro Fujita; Yasuko Oe; Syunya Kamioka; Masazumi Fujiwara; Shigeki Takeuchi

  2016 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2016, Peer-reviewed

  
• Photonic quantum information: science and technology

  Shigeki Takeuchi

  PROCEEDINGS OF THE JAPAN ACADEMY SERIES B-PHYSICAL AND BIOLOGICAL SCIENCES, Jan. 2016, Peer-reviewed

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• 0.54 mu m resolution two-photon interference with dispersion cancellation for quantum optical coherence tomography

  Masayuki Okano; Hwan Hong Lim; Ryo Okamoto; Norihiko Nishizawa; Sunao Kurimura; Shigeki Takeuchi

  SCIENTIFIC REPORTS, Dec. 2015, Peer-reviewed

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• Ultrathin fiber-taper coupling with nitrogen vacancy centers in nanodiamonds at cryogenic temperatures

  Masazumi Fujiwara; Hong-Quan Zhao; Tetsuya Noda; Kazuhiro Ikeda; Hitoshi Sumiya; Shigeki Takeuchi

  OPTICS LETTERS, Dec. 2015, Peer-reviewed

  
• Highly Efficient Coupling of Nanolight Emitters to a Ultra-Wide Tunable Nanofibre Cavity

  Andreas W. Schell; Hideaki Takashima; Shunya Kamioka; Yasuko Oe; Masazumi Fujiwara; Oliver Benson; Shigeki Takeuchi

  SCIENTIFIC REPORTS, May 2015, Peer-reviewed

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• Highly Efficient Coupling of Nanolight Emitters to a Ultra-Wide Tunable Nanofibre Cavity

  Andreas W. Schell; Hideaki Takashima; Shunya Kamioka; Yasuko Oe; Masazumi Fujiwara; Oliver Benson; Shigeki Takeuchi

  SCIENTIFIC REPORTS, May 2015, Peer-reviewed

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• Nonlinear optical waveguide for GaN-laser pumping

  Sunao Kurimura; Hwan Hong Lim; Shigeki Takeuchi

  Advanced Solid State Lasers, ASSL 2015, 2015, Peer-reviewed

  
• GaN-Diode-Laser-Pumped Optical Parametric Generation in Nonlinear Waveguide

  Hwan Hong Lim; Sunao Kurimura; Kazufumi Fujii; Masayuki Okano; Shigeki Takeuchi

  Nonlinear Optics, NLO 2015, 2015, Peer-reviewed

  
• Various Types of Quantum Entanglement and Their Emerging Application

  TAKEUCHI SHIGEKI

  日本物理学会誌, Dec. 2014

  
• Numerical simulations of nanodiamond nitrogen-vacancy centers coupled with tapered optical fibers as hybrid quantum nanophotonic devices

  Mohamed Almokhtar; Masazumi Fujiwara; Hideaki Takashima; Shigeki Takeuchi

  OPTICS EXPRESS, Aug. 2014, Peer-reviewed

  
• Recent progress in single-photon and entangled-photon generation and applications

  Shigeki Takeuchi

  JAPANESE JOURNAL OF APPLIED PHYSICS, Mar. 2014, Peer-reviewed

  
• Quantum Information Science Using Photons

  Shigeki Takeuchi

  AAPPS BULLETIN, Feb. 2014, Peer-reviewed

  
• Anomaly detection in reconstructed quantum states using a machine-learning technique

  Satoshi Hara; Takafumi Ono; Ryo Okamoto; Takashi Washio; Shigeki Takeuchi

  PHYSICAL REVIEW A, Feb. 2014, Peer-reviewed

  
• Observation of 1.2-GHz linewidth of zero-phonon-line in photoluminescence spectra of nitrogen vacancy centers in nanodiamonds using a Fabry-Perot interferometer

  Hong-Quan Zhao; Masazumi Fujiwara; Masayuki Okano; Shigeki Takeuchi

  OPTICS EXPRESS, Dec. 2013, Peer-reviewed

  
• Dispersion cancellation in high-resolution two-photon interference

  Masayuki Okano; Ryo Okamoto; Akira Tanaka; Shutaro Ishida; Norihiko Nishizawa; Shigeki Takeuchi

  Physical Review A - Atomic, Molecular, and Optical Physics, 30 Oct. 2013, Peer-reviewed

  
• Investigation of the performance of an ultralow-dark-count superconducting nanowire single-photon detector

  Shanthi Subashchandran; Ryo Okamoto; Labao Zhang; Akira Tanaka; Masayuki Okano; Lin Kang; Jian Chen; Peiheng Wu; Shigeki Takeuchi

  Japanese Journal of Applied Physics, Oct. 2013, Peer-reviewed

  
• An entanglement-enhanced microscope

  Takafumi Ono; Ryo Okamoto; Shigeki Takeuchi

  Nature Communications, 2013, Peer-reviewed

  
• Noncollinear parametric fluorescence by chirped quasi-phase matching for monocycle temporal entanglement

  A.Tanaka; R.Okamoto; H.H.Lim; S.Subashchandran; M.Okano; L.Zhang; L.Kang; J.Chen, P.Wu; T.Hirohata; S.Kurimura; S.Takeuchi

  Optics Express, Oct. 2012, Peer-reviewed

  
• Embedded TiO2 waveguides for sensing nanofluorophores in a microfluidic channel

  Masayuki Furuhashi; Masazumi Fujiwara; Takahito Ohshiro; Kazuki Matsubara; Makusu Tsutsui; Masateru Taniguchi; Shigeki Takeuchi; Tomoji Kawai

  APPLIED PHYSICS LETTERS, Oct. 2012, Peer-reviewed

  
• Experimental Demonstration of Adaptive Quantum State Estimation

  Ryo Okamoto; Minako Iefuji; Satoshi Oyama; Koichi Yamagata; Hiroshi Imai; Akio Fujiwara; Shigeki Takeuchi

  PHYSICAL REVIEW LETTERS, Sep. 2012, Peer-reviewed

  
• Coupling of ultrathin tapered fibers with high-Q microsphere resonators at cryogenic temperatures and observation of phase-shift transition from undercoupling to overcoupling

  Masazumi Fujiwara; Tetsuya Noda; Akira Tanaka; Kiyota Toubaru; Hong-Quan Zhao; Shigeki Takeuchi

  Optics Express, 13 Aug. 2012, Peer-reviewed

  
• Effect of substrates on the temperature dependence of fluorescence spectra of nitrogen vacancy centers in diamond nanocrystals

  H.Q.Zhao; M.Fujiwara; S.Takeuchi

  Jpn. J. Appl. Phys., Aug. 2012, Peer-reviewed

  
• Suppression of fluorescence phonon sideband from nitrogen vacancy centers in diamond nanocrystals by substrate effect

  Zhao, Hong-Quan; Fujiwara, Masazumi; Takeuchi, Shigeki

  Optics Express, 02 Jul. 2012, Peer-reviewed

  
• Highly indistinguishable heralded single-photon sources using parametric down conversion

  Masato Tanida; Ryo Okamoto; Shigeki Takeuchi

  OPTICS EXPRESS, Jul. 2012, Peer-reviewed

  
• Generation of broadband spontaneous parametric fluorescence using multiple bulk nonlinear crystals

  Masayuki Okano; Ryo Okamoto; Akira Tanaka; Shanthi Subashchandran; Shigeki Takeuchi

  OPTICS EXPRESS, Jun. 2012, Peer-reviewed

  
• Experimental evaluation of diffusion constant in a thin polymer film by triplet lifetime analysis of single molecules

  Takashi Chiba; Hideki Fujiwara; Jun-ichi Hotta; Shigeki Takeuchi; Keiji Sasaki

  JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, Jun. 2012, Peer-reviewed

  
• A nanodiamond-tapered fiber system with high single-mode coupling efficiency

  Tim Schröder; Masazumi Fujiwara; Tetsuya Noda; Hong-Quan Zhao; Oliver Benson; Shigeki Takeuchi

  Optics Express, 07 May 2012, Peer-reviewed

  
• Spectral dependence of ultra-low dark count Superconducting single photon detector for the evaluation of broadband parametric fluorescence

  Shanthi Subashchandran; Ryo Okamoto; Akira Tanaka; Masayuki Okano; Labao Zhang; Lin Kang; Jian Chen; Peiheng Wu; Shigeki Takeuchi

  QUANTUM SENSING AND NANOPHOTONIC DEVICES IX, 2012, Peer-reviewed

  
• Suppression of Phonon Sidebands in the Spectrum of Nitrogen Vacancy Centers in Diamond Nano-Crystals

  Hong-Quan Zhao; Masazumi Fujiwara; Shigeki Takeuchi

  ADVANCES IN PHOTONICS OF QUANTUM COMPUTING, MEMORY, AND COMMUNICATION V, 2012, Peer-reviewed

  
• Near-field coupling of a single NV center to a tapered fiber

  Tim Schroeder; Masazumi Fujiwara; Tetsuya Noda; Hong-Quan Zhao; Andreas W. Schell; Guenter Kewes; Oliver Benson; Shigeki Takeuchi

  ADVANCES IN PHOTONICS OF QUANTUM COMPUTING, MEMORY, AND COMMUNICATION V, 2012, Peer-reviewed

  
• Photonic Quantum Information Science and Surface Science

  Shigeki Takeuchi

  Hyomen Kagaku, Dec. 2011

  
• High Frequency-Resolved Measurements for Ultra high-Q Microresonators

  H.Fujiwara; H.Takashima; S.Takeuchi; K.Sasaki

  分光研究, Nov. 2011

  
• Highly Efficient Coupling of Photons from Nanoemitters into Single-Mode Optical Fibers

  M.Fujiwara; K.Toubaru; T.Noda; H.Q.Zhao; S.Takeuchi

  Nano Letters, Oct. 2011, Peer-reviewed

  
• Development of microfabricated TiO2 channel waveguides

  Masayuki Furuhashi; Masazumi Fujiwara; Takahito Ohshiro; Makusu Tsutsui; Kazuki Matsubara; Masateru Taniguchi; Shigeki Takeuchi; Tomoji Kawai

  AIP Advances, 15 Jul. 2011, Peer-reviewed

  
• Realization of a Knill-Laflamme-Milburn controlled-NOT photonic quantum circuit combining effective optical nonlinearities

  Ryo Okamoto; Jeremy L. O’Brien; Holger F. Hofmann; Shigeki Takeuchi

  Proceedings of the National Academy of Sciences, 06 Jun. 2011

  
• Detection of superposition in the orbital angular momentum of photons without excess components and its application in the verification of non-classical correlation

  Yoko Miyamoto; Daisuke Kawase; Mitsuo Takeda; Keiji Sasaki; Shigeki Takeuchi

  JOURNAL OF OPTICS, Jun. 2011, Peer-reviewed

  
• Optical transmittance degradation in tapered fibers

  M.Fujiwara; K.Toubaru; S.Takeuchi

  Optics Express, Apr. 2011, Peer-reviewed

  
• Quantum lithography under imperfect conditions: Effects of loss and dephasing on two-photon interference fringes

  Hideki Fujiwara; Yoshio Kawabe; Ryo Okamoto; Shigeki Takeuchi; Keiji Sasaki

  Journal of the Optical Society of America B: Optical Physics, 01 Mar. 2011, Peer-reviewed

  
• Phase shift spectra of a fiber-microsphere system at the single photon level

  Akira Tanaka; Takeshi Asai; Kiyota Toubaru; Hideaki Takashima; Masazumi Fujiwara; Ryo Okamoto; Shigeki Takeuchi

  Optics Express, Jan. 2011, Peer-reviewed

  
• Verification of non-classical correlation in orbital angular momentum of photons without excess components

  Yoko Miyamoto; Daisuke Kawase; Mitsuo Takeda; Keiji Sasaki; Shigeki Takeuchi

  2011 Int. Quantum Electron. Conf., IQEC 2011 and Conf. Lasers and Electro-Optics, CLEO Pacific Rim 2011 Incorporating the Australasian Conf. Optics, Lasers and Spectroscopy and the Australian Conf., 2011, Peer-reviewed

  
• Optical quantum circuit combining tailored optical nonlinearities

  Shigeki Takeuchi; Ryo Okamoto; Masazumi Fujiwara; Hong-Quan Zhao; Holger F. Hofmann; Jeremy L. O'Brien

  2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011, 2011, Peer-reviewed

  
• Collinear ultra-broadband parametric fluorescence generated from 10%-chirped quasi phase matched device

  Akira Tanaka; Ryo Okamoto; Hwan Hong Lim; Shanthi Subashchandran; Masayuki Okano; Sunao Kurimura; Shigeki Takeuchi

  2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011, 2011, Peer-reviewed

  
• Polarization-purity spectra of a tapered-fiber-coupled microsphere cavity system at cryogenic temperatures

  Masazumi Fujiwara; Akira Tanakaa; Kiyota Toubarua; Hong-Quan Zhao; Hideaki Takashima; Shigeki Takeuchi

  LASER RESONATORS AND BEAM CONTROL XIII, 2011, Peer-reviewed

  
• Generation of broadband spontaneous parametric fluorescence and its application to quantum optical coherence tomography

  Masayuki Okano; Ryo Okamoto; Akira Tanaka; Shanthi Subashchandran; Shutaro Ishida; Norihiko Nishizawa; Shigeki Takeuchi

  QUANTUM COMMUNICATIONS AND QUANTUM IMAGING IX, 2011, Peer-reviewed

  
• Fiber-microsphere system at cryogenic temperatures toward cavity QED using diamond NV centers

  Hideaki Takashima; Takeshi Asai; Kiyota Toubaru; Masazumi Fujiwara; Keiji Sasaki; Shigeki Takeuchi

  Optics Express, 05 Jul. 2010, Peer-reviewed, Corresponding author

  
• Simple scheme for expanding photonic cluster states for quantum information

  P. Kalasuwan; G. Mendoza; A. Laing; T. Nagata; J. Coggins; M. Callaway; S. Takeuchi; A. Stefanov; J. L. O'Brien

  Journal of the Optical Society of America B: Optical Physics, 01 Jun. 2010, Peer-reviewed

  
• Analysis of experimental error sources in a linear-optics quantum gate

  T.Nagata; R.Okamoto; H F. Hofmann; S.Takeuchi

  New Journal of Physics, Apr. 2010, Peer-reviewed, Last author, Corresponding author

  
• Nonlinear optical phase shift obtained from two-level atoms confined in a planar microcavity

  Hisaki Oka; Hideki Fujiwara; Shigeki Takeuchi; Keiji Sasaki

  JOURNAL OF APPLIED PHYSICS, Mar. 2010, Peer-reviewed

  
• Realization of optical quantum circuits - an entanglement filter -

  Shigeki Takeuchi; Ryo Okamoto

  応用物理, Feb. 2010

  
• How can we minimize errors in a linear-optics quantum gate?

  Tomohisa Nagata; Ryo Okamoto; Masato Tanida; Holger F. Hofmann; Shigeki Takeuchi

  Proceedings of SPIE - The International Society for Optical Engineering, 2010, Peer-reviewed

  
• How to Learn a Subject out of Your Speciality : Physics for Students of Information Science

  TAKEUCHI Shigeki

  The Journal of the Institute of Electronics, Information and Communication Engineers, Dec. 2009

  
• A review on optical quantum circuit -toward photonic quantum computers and quantum measurement-

  Shigeki Takeuchi

  光アライアンス 光技術の融合と活用のための情報ガイドブック, Oct. 2009

  
• Dynamical Analysis of Triplet Lifetime of Single Molecules by a Photon Interdetection Time Analysis Method

  Takashi Chiba; Hideki Fujiwara; Jun-ichi Hotta; Shigeki Takeuchi; Keiji Sasaki

  JOURNAL OF PHYSICAL CHEMISTRY C, Jul. 2009, Peer-reviewed

  
• Higher-dimensional entanglement effects in the detection of orbital angular momentum entangled photon pairs using hologram

  Y. Miyamoto; D. Kawase; M. Takeda; K. Sasaki; S. Takeuchi

  18th International Laser Physics Workshop (LPHYS '09), Jul. 2009, Peer-reviewed

  
• Effect of high-dimensional entanglement of Laguerre-Gaussian modes in parametric downconversion

  Daisuke Kawase; Yoko Miyamoto; Mitsuo Takeda; Keiji Sasaki; Shigeki Takeuchi

  Journal of the Optical Society of America B: Optical Physics, 01 Apr. 2009, Peer-reviewed

  
• An Entanglement Filter

  R.Okamoto; J.L.O'Brien; H.F.Hofmann; T.Nagata; K.Sasaki; S.Takeuchi

  Science, Jan. 2009, Peer-reviewed, Last author, Corresponding author

  
• Exact minimum and maximum of yield with a finite number of decoy light intensities

  Toyohiro Tsurumaru; Alexandre Soujaeff; Shigeki Takeuchi

  AIP Conference Proceedings, 2009, Peer-reviewed

  
• Analysis of errors in an optical controlled-NOT gate

  Tomohisa Nagata; Ryo Okamoto; Keiji Sasaki; Shigeki Takeuchi

  Proceedings of SPIE - The International Society for Optical Engineering, 2009, Peer-reviewed

  
• 光量子ICの出現

  竹内繁樹

  ﾊﾟﾘﾃｨ, Jan. 2009

  
• Toward the Realization of Optical Quantum Phase Gates Using Fiber Coupled Microsphere Resonators

  TAKASHIMA Hideaki; FUJIWARA Hideki; SASAKI Keiji; TAKEUCHI Shigeki

  Japanese journal of optics, Dec. 2008

  
• Manipulation of optical quNits using geometrical phase

  D. Kawase; Y. Miyamoto; M. Takeda; K. Sasaki; S. Takeuchi

  International Symposium on Physics of of Quantum Technology, Nov. 2008

  
• Observing quantum correlation of photons in Laguerre-Gauss modes using the Gouy phase

  D. Kawase; Y. Miyamoto; M. Takeda; K. Sasaki; S. Takeuchi

  Physical Review Letters, Aug. 2008, Peer-reviewed

  
• Manipulation of the Quantum States of Photons : Optical Quantum Gates and Optical Quantum Circuits

  TAKEUCHI Shigeki

  The Review of laser engineering, Aug. 2008

  
• Beating the standard quantum limit: Phase super-sensitivity of N-photon interferometers

  Ryo Okamoto; Holger F. Hofmann; Tomohisa Nagata; Jeremy L. O'Brien; Keiji Sasaki; Shigeki Takeuchi

  New Journal of Physics, 18 Jul. 2008, Peer-reviewed

  
• Single-photon interference experiment over 80 km with a pulse-driven heralded single-photon source

  Tsuyoshi Nishioka; Alexandre Soujaeff; Toshio Hasegawa; Toyohiro Tsurumaru; Jun'ichi Abe; Shigeki Takeuchi

  IEEE PHOTONICS TECHNOLOGY LETTERS, Mar. 2008, Peer-reviewed, Last author

  
• Exact minimum and maximum of yield with a finite number of decoy light intensities

  Toyohiro Tsurumaru; Alexandre Soujaeff; Shigeki Takeuchi

  Physical Review A, 14 Feb. 2008, Peer-reviewed, Last author

  
• Control of spontaneous emission coupling factor beta in fiber-coupled microsphere resonators

  Hideaki Takashima; Hideki Fujiwara; Shigeki Takeuchi; Keiji Sasaki; Masahide Takahashi

  APPLIED PHYSICS LETTERS, Feb. 2008, Peer-reviewed

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• Quantum interference fringes beating the diffraction limit

  Yoshio Kawabe; Hideki Fujiwara; Ryo Okamoto; Keiji Sasaki; Shigeki Takeuchi

  Optics Express, 17 Oct. 2007, Peer-reviewed

  
• Investigation of the spatial propagation properties of type-I parametric fluorescence by use of tuning curve filtering method

  Yoshio Kawabe; Hideki Fujiwara; Shigeki Takeuchi; Keiji Sasaki

  JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, Sep. 2007, Peer-reviewed

  
• Beating the standard quantum limit with four-entangled photons

  Tomohisa Nagata; Ryo Okamoto; Jeremy L. O'Brien; Keiji Sasaki; Shigeki Takeuchi

  SCIENCE, May 2007, Peer-reviewed

  
• Fiber-microsphere laser with a submicrometer sol-gel silica glass layer codoped with erbium, aluminum, and phosphorus

  H. Takashima; H. Fujiwara; S. Takeuchi; K. Sasaki; M. Takahashi

  Appl. Phys. Lett., Mar. 2007, Peer-reviewed

  
• Quantum key distribution at 1550 nm using a pulse heralded single photon source

  Alexandre Soujaeff; Tsuyoshi Nishioka; Toshio Hasegawa; Shigeki Takeuchi; Toyohiro Tsurumaru; Keiji Sasaki; Mitsuru Matsui

  Optics Express, 22 Jan. 2007, Peer-reviewed

  
• Numerical analysis of spatial propagation of parametric fluorescence photon pairs using the tuning-curve filtering method

  Hideki Fujiwara; Yoshio Kawabe; Shigeki Takeuchi; Keiji Sasaki

  Physical Review A - Atomic, Molecular, and Optical Physics, 02 Jan. 2007, Peer-reviewed

  
• Heralded single photon source at 1550 nm from pulsed parametric down conversion

  A. Soujaeff; S. Takeuchi; K. Sasaki; T. Hasegawa; M. Matsui

  JOURNAL OF MODERN OPTICS, Jan. 2007, Peer-reviewed

  
• Secure quantum key distribution over 40 km of fiber with a pulsed heralded single photon source

  Alexandre Soujaeff; Shigeki Takeuchi; Keiji Sasaki; Tsuyoshi Nishioka; Toyohiro Tsurumaru; Toshio Hasegawa; Mitsuru Matsui

  Conference on Lasers and Electro-Optics Europe - Technical Digest, 2007, Peer-reviewed

  
• Detection of orbital angular momentum superposition photon states using hologram and path interferometer

  Yoko Miyamoto; Mitsuo Takeda; Daisuke Kawase; Shigeki Takeuchi; Keiji Sasaki; Atsushi Wada

  Conference on Lasers and Electro-Optics Europe - Technical Digest, 2007, Peer-reviewed

  
• Analysis of errors in an optical Controlled-NOT gate with a high-precision testing bed

  Tomohisa Nagata; Ryo Okamoto; Holger F. Hofmann; Shigeki Takeuchi; Keiji Sasaki

  Conference on Lasers and Electro-Optics Europe - Technical Digest, 2007, Peer-reviewed

  
• Quantum Computers : The Physical Essence and Recent Progresses

  TAKEUCHI Shigeki

  IPSJ Magazine, Dec. 2006

  
• Analysis of quantum dot fluorescence coupled with a microsphere resonator

  Hideaki Takashima; Hideki Fujiwara; Jun-Ichi Hotta; Shigeki Takeuchi; Keiji Sasaki; Shin-Ya Murakami; Tsukasa Torimoto; Bunsho Ohtani

  Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 07 Sep. 2006, Peer-reviewed

  
• Polarization-discriminated spectra of a fiber-microsphere system

  Hidenori Konishi; Hideki Fujiwara; Shigeki Takeuchi; Keiji Sasaki

  APPLIED PHYSICS LETTERS, Sep. 2006, Peer-reviewed

  
• Analysis of an experimental quantum logic gate by complementary classical operations

  Holger F. Hofmann; Ryo Okamoto; Shigeki Takeuchi

  Modern Physics Letters A, 10 Aug. 2006, Peer-reviewed

  
• Analysis of quantum dot fluorescence coupled with a microsphere resonator

  H. Takashima; H. Fujiwara; J. Hotta; S. Takeuchi; K. Sasaki; S. Murakami; T. Torimoto; B. Ohtani

  Jpn. J. Appl. Phys., Aug. 2006, Peer-reviewed

  
• Tailoring two-photon interference with phase dispersion

  Ryo Okamoto; Shigeki Takeuchi; Keiji Sasaki

  PHYSICAL REVIEW A, Jul. 2006, Peer-reviewed

  
• Detailed analysis of a single-photon source using gated spontaneous parametric downconversion

  R Okamoto; S Takeuchi; K Sasaki

  JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, Nov. 2005, Peer-reviewed

  
• Demonstration of an optical quantum controlled-NOT gate without path interference

  R Okamoto; HF Hofmann; S Takeuchi; K Sasaki

  PHYSICAL REVIEW LETTERS, Nov. 2005, Peer-reviewed

  
• High-Yield Single-Photon Source Using Gated Spontaneous Parametric Downconversion

  Takeuchi, Shigeki; Okamoto, Ryo; Sasaki, Keiji

  Applied Optics, 20 Oct. 2004, Peer-reviewed

  
• A road for realizing practical quantum computers : Lying bottlenecks on the road and recent developments toward the realization using photons

  TAKEUCHI Shigeki

  応用物理, Aug. 2005

  
• Optical response of two-level atoms with reflection geometry as a model of a quantum phase gate

  H Oka; S Takeuchi; K Sasaki

  PHYSICAL REVIEW A, Jul. 2005, Peer-reviewed

  
• Fano resonance in a multimode tapered fiber coupled with a microspherical cavity

  A. Chiba; H. Fujiwara; J. Hotta; S. Takeuchi; K. Sasaki

  Appl. Phys. Lett., Jun. 2005, Peer-reviewed

  
• Quantum phase gate using single atom nonlinearity

  Shigeki Takeuchi; Hisaki Oka; Kunihiro Kojima; Holger F. Hofmann; Keiji Sasaki

  Proceedings of SPIE - The International Society for Optical Engineering, 2005, Peer-reviewed

  
• A study on the shape of two-photon wavefunctions after the nonlinear interaction with a one-dimensional atom

  K. Kojima; H. F. Hofmann; S. Takeuchi; K. Sasaki

  Nonlinear Optics, Quantum Optics, Jan. 2005, Peer-reviewed

  
• Heralded single photon source for quantum cryptography at 1550 nm

  Alexandre Soujaeff; Shigeki Takeuchi; Keiji Sasaki; Toshio Hasegawa; Mitsuru Matsui

  2005 European Quantum Electronics Conference, EQEC '05, 2005, Peer-reviewed

  
• Change of asymmetric lineshape in transmission spectra of a tapered fiber coupled with a microspherical cavity

  Akito Chiba; Hideki Fujiwara; Jun-Ichi Hotta; Shigeki Takeuchi; Keiji Sasaki

  Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest, 2005, Peer-reviewed

  
• Numerical analysis of propagation properties of parametric fluorescence photon-pairs by use of a tuning curve filtering method

  Hideki Fujiwara; Yoshio Kawabe; Shigeki Takeuchi; Keiji Sasaki

  IQEC, International Quantum Electronics Conference Proceedings, 2005, Peer-reviewed

  
• Demonstration of controlled-NOT gate using linear optics

  Ryo Okamoto; Holger F. Hofmann; Shigeki Takeuchi; Keiji Sasaki

  IQEC, International Quantum Electronics Conference Proceedings, 2005, Peer-reviewed

  
• Verification of hologram position in experiment of entanglement in orbital angular momentum of photons

  Daisuke Kawase; Atsushi Wada; Shigeki Takeuchi; Yoko Miyamoto; Keiji Sasaki; Mitsuo Takeda

  IQEC, International Quantum Electronics Conference Proceedings, 2005, Peer-reviewed

  
• Experimental analysis of spatial propagation properties of beam-like parametric fluorescence by use of a tuning curve filtering method

  Yoshio Kawabe; Hideki Fujiwara; Shigeki Takeuchi; Keiji Sasaki

  IQEC, International Quantum Electronics Conference Proceedings, 2005, Peer-reviewed

  
• Analysis of whispering-gallery modes of CdSe/ZnS quantum dots-bound micro spheres with a stem

  H. Takashima; A. Chiba; H. Fujiwara; J. Hotta; S. Takeuchi; K. Sasaki

  IQEC, International Quantum Electronics Conference Proceedings, 2005, Peer-reviewed

  
• Effects of decoherence on the nonlinear optical phase shift obtained from a one-dimensional atom

  H. Oka; H. F. Hofmann; S. Takeuchi; K. Sasaki

  Jpn. J. Appl. Phys., Nov. 2004, Peer-reviewed

  
• High-yield single-photon source using gated spontaneous parametric downconversion.

  Shigeki Takeuchi; Ryo Okamoto; Keiji Sasaki

  Applied optics, 20 Oct. 2004, Peer-reviewed

  
• Resonant Frequency Control of a Microspherical Cavity by Temperature Adjustment

  Akito Chiba; Hideki Fujiwara; Jun-ichi Hotta; Shigeki Takeuchi; Keiji Sasaki

  Japanese Journal of Applied Physics, 09 Sep. 2004, Peer-reviewed

  
• Efficiencies for the single-mode operation of a quantum optical nonlinear shift gate

  Kunihiro Kojima; Holger F. Hofmann; Shigeki Takeuchi; Keiji Sasaki

  Physical Review A, 23 Jul. 2004, Peer-reviewed

  
• Distinguishing genuine entangled two-photon-polarization states from independently generated pairs of entangled photons

  K. Tsujino; H. F. Hofmann; S. Takeuchi; K. Sasaki

  Physical Review Letters, 16 Apr. 2004, Peer-reviewed

  
• Distinguishing genuine entangled two-photon-polarization states from independently generated pairs of entangled photons

  Shigeki Takeuchi; Kenji Tsujino; Holger F. Hofmann; Keiji Sasaki

  Proceedings of SPIE - The International Society for Optical Engineering, 2004, Peer-reviewed

  
• Quantum-state tomography for spin-l systems

  Holger F. Hofmann; Shigeki Takeuchi

  Physical Review A, 23 Apr. 2004, Peer-reviewed

  
• Single-photon source using parametric down conversion

  Shigeki Takeuchi; Ryo Okamoto; Keiji Sasaki

  SPIE Proceedings, 03 Feb. 2004, Peer-reviewed, Lead author

  
• Nonlinear interaction of two photons at a one-dimensional atom: spatiotemporal quantum coherence in the emitted field

  K. Kojima; H. F. Hofmann; S. Takeuchi; K. Sasaki

  Physical Review A, 02 Jul. 2003, Peer-reviewed

  
• Optimized phase switching using a single-atom nonlinearity

  Holger F Hofmann; Kunihiro Kojima; Shigeki Takeuchi; Keiji Sasaki

  Journal of Optics B: Quantum and Semiclassical Optics, 16 Apr. 2003, Peer-reviewed

  
• Entanglement and four-wave mixing effects in the dissipation-free nonlinear interaction of two photons at a single atom

  Holger F. Hofmann; Kunihiro Kojima; Shigeki Takeuchi; Keiji Sasaki

  Physical Review A, 10 Oct. 2003, Peer-reviewed

  
• Violation of local uncertainty relations as a signature of entanglement

  Holger F. Hofmann; Shigeki Takeuchi

  Physical Review A, 22 Sep. 2003, Peer-reviewed

  
• Quantum phase gate for photonic qubits using only beam splitters and postselection

  HF Hofmann; S Takeuchi

  PHYSICAL REVIEW A, 08 Aug. 2002, Peer-reviewed

  
• Twin photon beams for single photon generation

  SHIGEKI TAKEUCHI

  Proceedings of the 7th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology Isom-Tokyo '01, Oct. 2002, Peer-reviewed

  
• Quantum Filter for Nonlocal Polarization Properties of Photonic Qubits

  Hofmann, Holger F.; Takeuchi, Shigeki

  Physical Review Letters, 26 Mar. 2002, Peer-reviewed

  
• An Experimental Realization of Quantum Cryptosystem

  HASEGAWA Toshio; NISHIOKA Tsuyoshi; ISHIZUKA Hirokazu; ABE Junichi; SHIMIZU Katsuhiro; MATSUI Mitsuru; TAKEUCHI Shigeki

  IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences, 01 Jan. 2002, Peer-reviewed

  
• Detailed analysis of the fidelity of quantum teleportation using photons : Considering real experimental parameters

  Tsujino, Kenji; Takeuchi, Shigeki; Sasaki, Keiji

  Physical Review A, 22 Oct. 2002, Peer-reviewed

  
• Beamlike twin-photon generation by use of type II parametric downconversion

  Takeuchi, Shigeki

  Optics Letters, 01 Jun. 2001, Peer-reviewed

  
• A simple quantum computer: Experimental realization of quantum computation algorithms with linear optics

  Shigeki Takeuchi

  Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi), 23 May 2001, Peer-reviewed

  
• Experimental demonstration of a three-qubit quantum computation algorithm using a single photon and linear optics

  Takeuchi, Shigeki

  Physical Review A, 03 Aug. 2000, Peer-reviewed

  
• Analysis of errors in linear-optics quantum computation

  Takeuchi, Shigeki

  Physical Review A, 31 Mar. 2000, Peer-reviewed

  
• Hybrid device of hexagonal boron nitride nanoflakes with defect centres and a nano-fibre Bragg cavity

  Toshiyuki Tashima; Hideaki Takashima; Andreas W. Schell; Toan Trong Tran; Igor Aharonovich; Shigeki Takeuchi

  Scientific Reports, 07 Jan. 2022, Peer-reviewed, Last author, Corresponding author

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Misc.

• Selective anti-Stokes excitation of a single defect center in hexagonal boron nitride

  Yudai Okashiro; Hideaki Takashima; Konosuke Shimazaki; Kazuki Suzuki; Yu Mukai; Igor Aharonovich; Shigeki Takeuchi

  CLEO 2024, 2024, Peer-reviewed, Last author, Corresponding author

  
• Experimental Demonstration of Adaptive Quantum State Estimation

  Ryo Okamoto; Minako Iefuji; Satoshi Oyama; Koichi Yamagata; Hiroshi Imai; Akio Fujiwara; Shigeki Takeuchi

  2013 CONFERENCE ON AND INTERNATIONAL QUANTUM ELECTRONICS CONFERENCE LASERS AND ELECTRO-OPTICS EUROPE (CLEO EUROPE/IQEC), 2013, Peer-reviewed

  
• Sum-Frequency-Photon Generation From an Entangled Photon Pair

  Yu Eto; Masayuki Okano; Akira Tanaka; Shanthi Subashchandran; Ryo Okamoto; Hwan Hong Lim; Sunao Kurimura; Shigeki Takeuchi

  2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR), 2013, Peer-reviewed

  
• Broadband Frequency Correlated Photon Pairs Using a Chirped-QPM Device

  Akira Tanaka; Ryo Okamoto; Hwan Hong Lim; Shanthi Subashchandran; Masayuki Okano; Labao Zhang; Lin Kang; Jian Chen; Peiheng Wu; Toru Hirohata; Sunao Kurimura; Shigeki Takeuchi

  2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR), 2013, Peer-reviewed

  
• Adaptive Quantum State Estimation of Mixed States Using Photons

  Satoshi Oyama; Minako Iefuji; Ryo Okamoto; Koichi Yamagata; Akio Fujiwara; Shigeki Takeuchi

  2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR), 2013, Peer-reviewed

  
• High-resolution Quantum Optical Coherence Tomography by Broadband Parametric Fluorescence

  Masayuki Okano; Ryo Okamoto; Akira Tanaka; Shutaro Ishida; Norihiko Nishizawa; Shigeki Takeuchi

  2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR), 2013, Peer-reviewed

  
• 分極反転光デバイスによる新しい光量子科学ーモノサイクル量子もつれ光の実現に向けて

  竹内繁樹; 岡本亮; 岡野真之; Subashchandran Shanthi; 田中陽

  オプトロ二クス, Nov. 2012

  
• ナノテーパ光ファイバを駆使した光量子デバイス

  藤原正澄; 竹内繁樹

  化学工業, Sep. 2012

  
• Manipulating single-photons at will : Application to quantum information and quantum metrology

  TAKEUCHI Shigeki

  応用物理, Feb. 2008

  
• A Review on Quantum Computation Using Linear Optics

  TAKEUCHI Shigeki

  Japanese journal of optics, May 2004

  
• Enhanced direct optical excitation of an NV center via Nanofiber Bragg-cavity: A numerical simulation

  Toshiyuki Tashima; Hideaki Takashima; Shigeki Takeuchi

  Optics InfoBase Conference Papers, 2019

  
• Design and fabrication of a silicon nitride ring resonator for onchip broadband entangled photon sources

  Zhenghao Yin; Kenta Sugiura; Xiaoyang Cheng; Hideaki Takashima; Ryo Okamoto; Shiyoshi Yokoyama; Shigeki Takeuchi

  Optics InfoBase Conference Papers, 2019

  
• Realization of a high-Q factor nanofiber Bragg cavity using a He focused ion beam milling system

  Hideaki Takashima; Atsushi Fukuda; Yusuke Iwabata; Hironaga Maruya; Andreas W. Schell; Shigeki Takeuchi

  Optics InfoBase Conference Papers, 2017

  
• Realization of multiplexing of heralded single photon sources using cascaded on-off detectors

  Takayuki Kiyohara; Ryo Okamoto; Shigeki Takeuchi

  Optics InfoBase Conference Papers, 2017

  
• Adaptive quantum state estimation for dynamic quantum states

  Saki Nohara; Ryo Okamoto; Akio Fujiwara; Shigeki Takeuchi

  Optics InfoBase Conference Papers, 2017

  
• One quantum shutter can close two slits simultaneously

  Ryo Okamoto; Shigeki Takeuchi

  Optics InfoBase Conference Papers, 2017

  
• Consistent and Efficient Nonparametric Different-Feature Selection

  Satoshi Hara; Takayuki Katsuki; Hiroki Yanagisawa; Takafumi Ono; Ryo Okamoto; Shigeki Takeuchi

  ARTIFICIAL INTELLIGENCE AND STATISTICS, VOL 54, 2017

  
• Fine frequency tuning of a microspherical cavity by temperature control

  Akito Chiba; Hideki Fujiwara; Jim-Ichi Hotta; Shigeki Takeuchi; Keiji Sasaki

  Conference on Lasers and Electro-Optics Europe - Technical Digest, 2003, Peer-reviewed

  
• An overview on the recent progress of quantum computers

  TAKEUCHI Shigeki

  応用物理, Nov. 2002

  
• Quantum Information Technology in the 21st Century

  TAKEUCHI Shigeki

  The Journal of the Institute of Electronics,Information and Communication Engineers, Jan. 2001

  
• Quantum Computation Using Photons

  TAKEUCHI Shigeki

  Japanese journal of optics, Dec. 2000

  
• Photonic Quantum Sensing Using Entangled Photons

  岡本亮; 向井佑; 竹内繁樹

  レーザー研究, 2024

  
• Realization of direct optical excitation and detection of NV centers in nanodiamond by excited laser via a nanofiber Bragg cavities

  Tashima T.; Takashima H.; Takeuchi S.

  Meeting Abstracts of the Physical Society of Japan, 2020

  
• Experiment of defects in hBN nanoflakes coupled to Nano-Fiber Bragg-cavity

  Tashima T.; Takashima H.; Schell A.; Tran T. T.; Aharonovich I.; Takeuchi S.

  Meeting Abstracts of the Physical Society of Japan, 2019

  
• 19pBJ-7 Numerical simulation of the resonant wavelength tunability of a nanofiber Bragg cavity

  Takashima T.; Fukuda A.; Fujita S.; Schell Andreas W.; Takeuchi S.

  Meeting Abstracts of the Physical Society of Japan, 2016

  
• 17aAC-5 Study on the dispersion control of frequency entangled photon pairs to minimize temporal correlation

  Sugano S.; Okano M.; Eto Y.; Okamoto R.; Takeuchi S.

  Meeting Abstracts of the Physical Society of Japan, 2015

  
• 23pAN-13 Implementation of a controlled SWAP gate with photonic circuits

  Ono T.; Tanida M.; Okamoto R.; Hofmann Holger F.; Takeuchi S.

  Meeting Abstracts of the Physical Society of Japan, 2015

  
• 17aAC-7 FDTD analysis of photon emission from single dipole coupled to a nanofiber Bragg cavity

  H. Hideaki; Fujiwara M.; Schell A.; Takeuchi S.

  Meeting Abstracts of the Physical Society of Japan, 2015

  
• 17pAC-1 Two-photon interference using a photon number controlled multiplexed single photon source

  Kiyohara T.; Okamoto R.; Takeuchi S.

  Meeting Abstracts of the Physical Society of Japan, 2015

  
• 28aRB-4 Tapered-fiber detection of single light emitter fluorescence and its dependence on the taper diameter

  Fujiwara M.; Noda T.; Toubaru K.; Zhao H.-Q.; Takeuchi S.

  Meeting Abstracts of the Physical Society of Japan, 2011

  
• 23pTB-1 Toward the realization of linear-optics quantum gates : significance and interactions of error sources

  Nagata T.; Okamoto R.; Hofmann Holger F.; Takeuchi S.

  Meeting Abstracts of the Physical Society of Japan, 2010

  
• 19aZB-8 The recovery rate of a single CdSe/ZnS quantum dot with reductant from it's off-state

  Tamura S.; Takeuchi S.; Sasaki K.; Torimoto T.

  Meeting Abstracts of the Physical Society of Japan, 2007

  
• 25aPS-72 The effect of 2-Merchaptoethanol on the photoluminescence of single CdSe/ZnS quantum dots

  TAMURA S.; TAKEUCHI S.; SASAKI K.; TORIMOTO T.

  Meeting Abstracts of the Physical Society of Japan, 2006

  
• 13pTF-5 Optical resonance spectrum of a microsphere coupled with a tapered fiber

  Chiba A; Fujiwara H; Hotta J; Takeuchi S; Sasaki K

  Meeting Abstracts of the Physical Society of Japan, 2004

  
• 23aTF-10 Uncertainty characteristics of entangled photons

  Hofmann H. F.; Takeuchi S.

  Meeting Abstracts of the Physical Society of Japan, 2003

  
• A demonstration of quantum computation algorithm using linear optics.

  竹内繁樹

  量子情報技術研究会資料, 1999

  
• A Review on Today’s Quantum Computers.

  竹内繁樹

  情報処理, 1999

  
• Toward the realization of quantum computers.

  竹内繁樹

  応用物理学会学術講演会講演予稿集, 1998

  
• Experimental realization of a simple quantum computer I

  Takeuchi S.

  Meeting Abstracts of the Physical Society of Japan, 1996

  
• 30a-PS-11 Fabrication of Superconducting Tunnel Junctions on LB Films as Phonon Spectrometer.

  Takeuchi S.; Kitabayashi H.; Ishiguro T.

  Meeting Abstracts of the Physical Society of Japan, 1993

  
• 25p-T-15 Lattice Defects in Distyrylpyrazine Single Crystals

  Izumi K.; Takeuchi S.; Sheerwood J.N.

  Meeting Abstracts of the Physical Society of Japan, 1991

  
• 量子力学2025 誕生から100年,拡大するその科学 赤外分光に大革命!?量子もつれを利用した光センシング

  竹内繁樹

  現代化学, 01 Jan. 2025

  
• Toward observing two-photon absorption of fluorescent molecules using entangled photon pairs

  佐々木駿輔; 阿部尚文; 斎藤凌矢; 久光守; 徳田勝彦; 岡本亮; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2023

  
• 単一発光体を用いた連続適応量子状態推定の実現

  井上真奈人; 野原紗季; 嶋崎幸之介; 高島秀聡; 岡本亮; TRAN Toan Trong; AHARONOVICH Igor; 藤原彰夫; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2023

  
• Single photon emission from single defect center in hexagonal boron nitride by long wavelength excitation

  岡城勇大; 嶋崎幸之介; 鈴木和樹; 高島秀聡; AHARONOVICH Igor; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2023

  
• Development of a superconducting nanowire single photon detector for mid-infrared wavelengths

  美馬覚; 知名史博; 藪野正裕; 宮嶋茂之; 三木茂人; 三木茂人; 蒲優樹; 田嶌俊之; 荒畑雅也; 向井佑; 岡本亮; 竹内繁樹; 寺井弘高

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2022

  
• Multi-photon pair generation using a silicon nitride ring resonator

  中村暖; 杉浦健太; 岡本亮; FENG Qiu; 横山士吉; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2022

  
• Proposal and evaluation of an algorithm for removing artifacts in quantum optical coherence tomography images

  堀野智康; 阿部尚文; 川口蓉子; CAO B.; 岡本亮; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2021

  
• Transferring a selective nanodiamond embedding a single NV center to an optical nanofiber using a tungsten probe

  福重一樹; 川口洋生; 嶋崎幸之助; 田嶌俊之; SCHELL Andreas W.; 高島秀聡; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2020

  
• Visible-infrared region quantum entanglement photon sources by PPMgSLT device

  蒲優樹; 荒畑雅也; 田嶌俊之; 向井佑; 久光守; 徳田勝彦; 岡本亮; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2020

  
• Optical characterization of single photon sources at SiO₂/SiC interfaces

  金子光顕; 高島秀聡; 川口洋生; 竹内繁樹; 木本恒暢

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2020

  
• The research of optimally coupling Type -I parametric down converted photon pairs into a single mode fiber

  PARK Geobae; 清原孝行; 岡本亮; 岡本亮; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2020

  
• ヘリウムイオン顕微鏡を用いたナノファイバブラッグ共振器の開発

  高島秀聡; 福田純; 丸谷浩永; 岩端祐介; SHELL Andreas W; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2017

  
• ダイヤモンドナノ結晶結合ナノ光ファイバを用いた光量子デバイスの実現に向けて

  高島秀聡; 高島秀聡; 高島秀聡; 岩端祐介; 藤田慎司朗; 藤原正澄; 藤原正澄; 竹内繁樹; 竹内繁樹; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2017

  
• 光子対数識別と多重化を組み合わせた伝令付き単一光子源

  清原孝行; 岡本亮; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2016

  
• 微小リング共振器と導波路間の結合状態評価

  小野裕介; 石野雅章; 岡本亮; 横山士吉; 横山士吉; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2016

  
• 量子光コヒーレンストモグラフィがよせる分極反転デバイスへの期待

  岡野真之; 岡野真之; 西澤典彦; 栗村直; 竹内繁樹; 竹内繁樹

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2013

  
• LiNbO₃結晶を用いた可視-赤外域量子もつれ光子対の生成と評価

  荒畑雅也; CAO Bo; 岡本亮; 岡本亮; 竹内繁樹

  応用物理学会秋季学術講演会講演予稿集(CD-ROM), 2019

  
• 量子赤外分光の高度化に向けた研究動向—Advances in quantum infrared spectroscopy—特集 注目の光量子計測・センシング

  向井 佑; 荒畑 雅也; 田嶌 俊之; 竹内 繁樹

  Optronics : 光技術コーディネートジャーナル, Feb. 2023

  
• 量子もつれ光を用いたセンシング技術の現状と展望—Current Status and Future Prospects of Sensing Technologies Using Quantum Entangled Photons—量子生命科学と光

  竹内 繁樹; 岡本 亮; 田嶌 俊之; 向井 佑; 曹 博

  光学 = Japanese journal of optics : publication of the Optical Society of Japan, Aug. 2020

  
• 27pYE-4 Fano effect in transmission spectra of a tapered fiber coupled with a microspherical cavity

  Chiba A; Fujiwara H; Hotta J; Takeuchi S; Sasaki K

  Meeting abstracts of the Physical Society of Japan, 04 Mar. 2005

  
• Quantum Optics and Nonlinear Optics

  TAKEUCHI Shigeki

  光学, 10 Apr. 2006

  
• An Object Model for Financial Derivatives

  TAKEUCHI Shigeki

  IPSJ Magazine, 15 Dec. 1999

  
• Will Cats Dream on Realized Quantum Computers in the 21st Century?

  Takeuchi Shigeki

  日本物理學會誌, Apr. 1999

  
• 25pA-2 A demonstration of quantum computation algorithm of three qubits using linear optics

  Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 03 Sep. 1999

  
• Realization of Quantum Computers Using Photons

  TAKEUCHI Shigeki

  The Review of laser engineering, 15 Oct. 2000

  
• 22pEC-8 Realization and perspective of photonic quantum circuits

  Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

  
• 23pED-4 Development of superconducting nanowire single photon detection system for the evaluation of ultra broadband parametric fluorescence

  SubashChandran Shanthi; Okamoto Ryo; Tanaka Akira; Okano Masayuki; Zhang Labao; Kang Lin; Chen Jian; Wu Peiheng; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

  
• 23pED-13 Application of tapered fiber coupled microsphere resonator to optical quantum device : Control of resonant frequency at cryogenic temperature

  Noda T.; Fujiwara M.; Zhao H. Q.; Takashima H.; Takeuchi S.

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

  
• 23pED-7 Comparison of the methods about optical phase measurement beating the standard quantum limit

  Ono Takafumi; Okamoto Ryo; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

  
• 21aED-8 Toward the realization of Quantum Controlled-SWAP operation using optical quantum circuit

  Tanida Masato; Okamoto Ryo; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

  
• 21aED-7 Realization of a Knill-Laflamme-Milbern controlled-NOT gate

  Okamoto Ryo; O'Brien Jeremy L.; Hofmann Holger F.; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

  
• 21pPSB-50 Phonon Side Band Suppression in NV-Fluorescence Spectrum by Use of Substrate Effect

  Zhao Hong-Quan; Fujiwara Masazumi; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

  
• 22pEC-8 Realization and perspective of photonic quantum circuits

  Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

  
• 22pEB-4 Adaptive Measurement for Quantum Phase Estimation

  Iefuji Minako; Okamoto Ryo; Yamagata Koichi; Imai Hiroshi; Fujiwara Akio; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

  
• 22aEB-1 Characterization of tapered-fiber-based fluorescence collection technique of nano-emitters

  Fujiwara M.; Noda T.; Toubaru K.; Zhao H.-Q.; Takeuchi S.

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

  
• A Simple Quantum Computer: Experimental Realization of Quantum Computation Algorithms with Linear Optics

  TAKEUCHI Shigeki

  The Transactions of the Institute of Electronics,Information and Communication Engineers. A, Dec. 1998

  
• Today's view on the experimental realization of quantum computers

  Takeuchi Shigeki

  Proceedings of the Society Conference of IEICE, 13 Aug. 1997

  
• CI-1-4 Beating the classical limit : Application of quantum entanglement to metrology

  Takeuchi Shigeki

  Proceedings of the IEICE General Conference, 02 Mar. 2010

  
• 20pTD-9 Quantum Process Tomography of Microsphere Cavity-Coupled Tapered Fiber System at the Single Photon Level

  Tanaka Akira; Toubaru Kiyota; Fujiwara Masazumi; Okamoto Ryo; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 01 Mar. 2010

  
• 量子もつれ光の光計測への応用 (特集 量子光工学)

  岡本 亮; 岡野 真之; 竹内 繁樹

  O plus E : Optics・Electronics, Sep. 2015

  
• Ultrahigh-Resolution Optical Coherence Tomography Using Quantum Entangled Photon Pairs

  岡野 真之; 岡本 亮; 竹内 繁樹

  レーザー研究 = The review of laser engineering : レーザー学会誌, Oct. 2016

  
• ナノ光ファイバを用いた量子光工学の現状

  高島 秀聡; 竹内 繁樹

  機械の研究 = Science of machine, Jun. 2017

  
• Coupling experiment between an optical nanofiber Bragg cavity and quantum dots

  高島秀聡; 高島秀聡; 高島秀聡; SCHELL Andreas W; 大江康子; 大江康子; 大江康子; 上岡俊也; 上岡俊也; 藤原正澄; 藤原正澄; BENSON Oliver; 竹内繁樹; 竹内繁樹; 竹内繁樹

  電子情報通信学会技術研究報告, 21 Jan. 2016

  
• 量子ドットとナノ光ファイバブラッグ共振器との結合実験

  高島秀聡; 高島秀聡; 高島秀聡; SCHELL Andreas W; 大江康子; 大江康子; 大江康子; 上岡俊也; 上岡俊也; 藤原正澄; 藤原正澄; BENSON Oliver; 竹内繁樹; 竹内繁樹; 竹内繁樹

  応用物理学会秋季学術講演会講演予稿集(CD-ROM), 31 Aug. 2015

  
• Enhancement of single quantum emitters using ultra-widely tunable nanofiber Bragg cavities

  Andreas W. Schell; Andreas W. Schell; Andreas W. Schell; Andreas W. Schell; Hideaki Takashima; Hideaki Takashima; Hideaki Takashima; Shunya Kamioka; Yasuko Oe; Yasuko Oe; Shiro Fujita; Masazumi Fujiwara; Masazumi Fujiwara; Oliver Benson; Shigeki Takeuchi; Shigeki Takeuchi; Shigeki Takeuchi

  Conference on Lasers and Electro-Optics Europe - Technical Digest, 10 Aug. 2015

  
• An entanglement-enhanced microscope

  竹内 繁樹; 小野 貴史; 岡本 亮

  応用物理, Aug. 2015

  
• 共振器内蔵ナノ光ファイバと量子ドットの結合実験

  大江康子; 大江康子; SHELL Andreas; SHELL Andreas; SHELL Andreas; SHELL Andreas; 高島秀聡; 高島秀聡; 高島秀聡; 上岡俊也; 上岡俊也; 藤原正澄; 藤原正澄; 藤原正澄; BENSON Oliver; 竹内繁樹; 竹内繁樹; 竹内繁樹

  日本物理学会講演概要集(CD-ROM), 24 Mar. 2015

  
• リニアトラップ中の微粒子を用いたテーパ光ファイバー表面における帯電量測定

  紙谷和彦; 田中歌子; 藤原正澄; 竹内繁樹; 占部伸二

  日本物理学会講演概要集, 22 Aug. 2014

  
• Narrow two-photon interference of broadband spontaneous parametric fluorescence generated from chirped PPSLT devices

  Masayuki Okano; Ryo Okamoto; Norihiko Nishizawa; Hwan Hong Lim; Sunao Kurimura; Shigeki Takeuchi

  Meeting abstracts of the Physical Society of Japan, Aug. 2014

  
• 30aCC-8 Adaptive Quantum State Estimation for Single Quantum Bit

  Oyama Satoshi; Okamoto Ryo; Ono Takafumi; Takeuchi Shigeki; Yamagata Koichi; Fujiwara Akio

  Meeting abstracts of the Physical Society of Japan, 05 Mar. 2014

  
• 光量子デバイスへの応用を目指したナノ微細加工テーパー光ファイバの作製とその評価

  上岡俊也; 藤原正澄; 高島秀聡; 竹内繁樹

  日本物理学会講演概要集, 05 Mar. 2014

  
• Optical Phase Measurement Using Entangled Photons

  OKAMATO Ryo; TAKEUCHI Shigeki

  光学, 10 Oct. 2013

  
• Quantum state data mining

  Ono Takafumi; Okamoto Ryo; Takeuchi Shigeki; Hara Satoshi; Washio Takashi

  Meeting abstracts of the Physical Society of Japan, 26 Aug. 2013

  
• ダイヤモンドナノ結晶とテーパ光ファイバの結合に関する数値解析

  MOHAMED Almokhtar; 藤原正澄; 竹内繁樹

  日本物理学会講演概要集, 26 Aug. 2013

  
• 狭帯域単一光子源へ向けたダイヤモンド窒素欠陥中心とテーパ光ファイバの結合

  藤原正澄; ZHAO H.‐Q; 岡野真之; 野田哲矢; 池田和寛; 角谷均; 竹内繁樹

  日本物理学会講演概要集, Aug. 2013

  
• パラメトリック蛍光光子対からの和周波光子発生実験

  江藤祐; 岡野真之; 田中陽; 岡本亮; LIM Hwan Hong; 栗村直; 竹内繁樹

  日本物理学会講演概要集, Aug. 2013

  
• 量子もつれ光子対生成レートの2光子量子干渉への影響

  岡野真之; 横井宇慧; 田中陽; 岡本亮; 竹内繁樹

  日本物理学会講演概要集, Aug. 2013

  
• Spectral properties of ultra-broadband entangled photons generated from chirped-MgSLT crystal towards monocycle entanglement generation

  Akira Tanaka; Ryo Okamoto; Hwan Hong Lim; Shanthi Subashchandran; Masayuki Okano; Labao Zhang; Lin Kang; Jian Chen; Peiheng Wu; Toru Hirohata; Sunao Kurimura; Shigeki Takeuchi

  Proceedings of SPIE - The International Society for Optical Engineering, 2013

  
• Coupling diamond nitrogen vacancy centers to tapered fibers: Toward generation of indistinguishable single photons

  M. Fujiwara; T. Schroder; H. Q. Zhao; T. Noda; S. Kamioka; O. Benson; S. Takeuchi

  Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest, 2013

  
• 人工光合成研究の最前線 ナノテーパ光ファイバを駆使した光量子デバイス

  藤原正澄; 竹内繁樹

  化学工業, 01 Sep. 2012

  
• 19pAK-6 Detection of orbital angular momentum entangled photon states by hologram shifting method

  Miyamoto Yoko; Ozaki Yusuke; Takeuchi Shigeki; Takeda Mitsuo; Sasaki Keiji

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2012

  
• 19aAK-9 Adaptive Measurement for Quantum Phase Estimation II

  Oyama Satoshi; Iefuji Minako; Okamoto Ryo; Yamagata Koichi; Fujiwara Akio; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2012

  
• 19aAK-8 Experimental demonstration of an entanglement microscope

  Ono Takafumi; Okamoto Ryo; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2012

  
• 高効率単一光子源応用を目指したナノ微細加工テーパ光ファイバの作成

  上岡俊也; 上岡俊也; 藤原正澄; 竹内繁樹

  日本物理学会講演概要集, 24 Aug. 2012

  
• 19pAK-4 Narrow two-photon interference signals and effects of high order dispersion toward quantum optical coherence tomography

  Okano Masayuki; Okamoto Ryo; Tanaka Akira; Subashchandran Shanthi; Ishida Shutaro; Nishizawa Norihiko; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2012

  
• 19pAK-5 Measurement of the frequency correlation of broadband parametric fluorescence generated from chirped-PPSLT device

  Tanaka Akira; Okamoto Ryo; Lim Hwan Hong; Okano Masayuki; Subashchandran Shanthi; Kurimura Sunao; Zhang Labao; Kang Lin; Chen Jian; Wu Peiheng; Hirohata Toru; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2012

  
• 7K極低温下における極細テーパ光ファイバと微小球共振器の結合と距離制御

  藤原正澄; 野田哲矢; 桃原清太; ZHAO H.‐Q; 竹内繁樹

  日本物理学会講演概要集, 05 Mar. 2012

  
• Dispersion-tolerant quantum optical coherence tomography by broadband spontaneous parametric fluorescence

  OKANO Masayuki; OKANO Masayuki; OKAMOTO Ryo; OKAMOTO Ryo; TANAKA Akira; TANAKA Akira; SUBASHCHANDRAN Shanthi; SUBASHCHANDRAN Shanthi; ISHIDA Shutaro; NISHIZAWA Norihiko; TAKEUCHI Shigeki; TAKEUCHI Shigeki

  Abstr RIES Hokudai Symp, 2012

  
• 23pED-5 Evaluation of properties of broadband parametric fluorescence generated from chirped-PPSLT device II

  Tanaka Akira; Okamoto Ryo; Lim Hwan Hong; Okano Masayuki; Subashchandran Shanthi; Kurimura Sunao; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

  
• 23pED-3 Two-photon interference experiments of broadband spontaneous parametric fluorescence toward quantum optical coherence tomography

  Okano Masayuki; Okamoto Ryo; Tanaka Akira; Subashchandran Shanthi; Ishida Shutaro; Nishizawa Norihiko; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

  
• 26pRB-1 Toward the realization of monocycle entangled photon pair sources

  Takeuchi Shigeki; Okamoto Ryo; Okano Masayuki; Subashchandran Shanthi; Tanaka Akira; Kurimura Sunao; Hofmann Holger F; Nishizawa Norihiko

  Meeting abstracts of the Physical Society of Japan, 03 Mar. 2011

  
• 26pRB-2 Broadening of parametric fluorescence from BBO crystal

  Okamoto Ryo; Okano Masayuki; Tanaka Akira; Subashchandran Shanthi; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 03 Mar. 2011

  
• 26pRB-4 Evaluation of properties of broadband parametric fluorescence generated from chirped-PPSLT device

  Tanaka Akira; Okamoto Ryo; Lim Hwan Hong; Okano Masayuki; Subashchandran Shanthi; Kurimura Sunao; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 03 Mar. 2011

  
• 26pRB-3 Application of broadband parametric fluorescence to quantum optical coherence tomography

  Okano Masayuki; Okamoto Ryo; Tanaka Akira; Subashchandran Shanthi; Ishida Shutaro; Nishizawa Norihiko; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 03 Mar. 2011

  
• Analysis of input-output characteristic of fiber-coupled microsphere laser using rate equations

  TAKASHIMA HIDEAKI; TAKASHIMA HIDEAKI; FUJIWARA HIDEKI; TAKAHASHI MASAHIDE; SASAKI KEIJI; TAKEUCHI SHIGEKI; TAKEUCHI SHIGEKI

  Optics & Photonics Japan講演予稿集, 24 Nov. 2009

  
• 27aSD-7 Coupling between optical tapered fibers and microspherical cavities at low temperatures

  Takashima Hideaki; Asai Takeshi; Fujiwara Hideki; Sasaki Keiji; Takeuchi Shigeki

  Meeting abstracts of the Physical Society of Japan, 03 Mar. 2009

  
• 低温での微小球共振器とテーパーファイバーとのカップリング

  高島秀聡; 浅井健志; 上田哲也; 藤原英樹; 竹内繁樹; 笹木敬司

  応用物理学関係連合講演会講演予稿集, 27 Mar. 2008

  
• Nonlinear interaction of two photons mediated by a single two-level atom RIES

  Kojima Kunihiro; Holger F Hofmann; Takeuchi Shigeki; Sasaki Keiji

  Meeting abstracts of the Physical Society of Japan, 13 Aug. 2002

  
• Single photon source us ins parametric fluorescence

  Okamoto Ryo; Takeuchi Shigeki; Sasaki Keiji

  Meeting abstracts of the Physical Society of Japan, 13 Aug. 2002

  
• 9pXE-8 Single entangled-photon pair generation using parametric down conversion and linear optics

  Takeuchi Shigeki; Holger F Hofmann

  Meeting abstracts of the Physical Society of Japan, 13 Aug. 2002

  
• 9pXE-9 Nonlinear quantum optics with beam splitters,single photon sources, and precise detectors

  Takeuchi S; Hofmann H.F

  Meeting abstracts of the Physical Society of Japan, 13 Aug. 2002

  
• Adjustment of the resonance wavelength of a microsphere resonator by using temperature control

  Chiba A; Fujiwara H; Hotta S; Takeuchi S; Sasaki K

  Meeting abstracts of the Physical Society of Japan, 13 Aug. 2002

  
• An overview of today's quantum computers.

  TAKEUCHI Shigeki; ISU Toshiro

  應用物理, 10 Sep. 1999

  
• Phonon stopband in LB films.

  ISHIGURO Takehiko; TAKEUCHI Shigeki

  應用物理, 10 Mar. 1994

  

Presentations

• Cryogenic Evaluation of Nanodiamonds Contaning Silicon-Vacancy Centers Created by lon Implantation

  K. Shimazaki; K. Suzuki; K. Sakamoto; Y. Okashiro; H. Abe; T. Ohshima; H. Takashima; S. Takeuchi

  International Symposia on Creation of Advanced Photonic and Electronic Devices 2025 and Advanced Quantum Technology for Future 2025, 12 Mar. 2025

  
• Toward Fabrication of NanoFiber Bragg Cavity Operating at Cryogenic Temperature

  K. Sakamoto; K. Shimazaki; H. Takashima; S. Takeuchi

  International Symposia on Creation of Advanced Photonic and Electronic Devices 2025 and Advanced Quantum Technology for Future 2025, 12 Mar. 2025

  
• A W-state Analyzer for Photonic Qubits

  G. Park; R. Okamoto; H. F. Hofmann; S. Takeuchi

  International Symposia on Creation of Advanced Photonic and Electronic Devices 2025 and Advanced Quantum Technology for Future 2025, 12 Mar. 2025

  
• Adjacent-mode Coherence Measurement for Efficient Evaluation of Dimension of Frequency-entangled Photon Pairs

  H. Gotoh; R. Okamoto; B. E. Little; S. T. CHU; S. Takeuchi

  International Symposia on Creation of Advanced Photonic and Electronic Devices 2025 and Advanced Quantum Technology for Future 2025, 12 Mar. 2025

  
• Fabrication of nanodiamonds containing single Tin vacancy centers

  高島秀聡; 嶋崎幸之介; 阿部浩之; 大島武; 竹内繁樹

  2025年第72回応用物理学会春季学術講演会, 17 Mar. 2025

  
• Creation of Single Germanium Vacancy Centers in Nanodiamonds by Ion Implantation

  嶋崎幸之介; 高島秀聡; Mandal Soumen; Williams Oliver; Morley Gavin; 阿部浩之; 大島武; 竹内繁樹

  2025年第72回応用物理学会春季学術講演会, 17 Mar. 2025

  
• Enhanced two-photon excitation fluorescence using super-thermal light

  宮田龍一; 山岡寛; 塗谷睦生; 衞藤雄二郎; 竹内繁樹

  2025年第72回応用物理学会春季学術講演会, 15 Mar. 2025

  
• The dependence of time-domain signal in nonlinear quantum interferometer on pump focusing parameter

  勝秀昭; 向井佑; 岡本亮; 徳田勝彦; 竹内繁樹

  2025年第72回応用物理学会春季学術講演会, 15 Mar. 2025

  
• Research on ultra-broadband entangled photon pair generation using slab waveguide type quasi-phase-matching device

  鈴木大寛; 阿部尚文; 久光守; 徳田勝彦; 岡本亮; 竹内繁樹

  2025年第72回応用物理学会春季学術講演会, 15 Mar. 2025

  
• Efficient evaluation of dimension of frequency-entangled photon pairs

  後藤啓文; 岡本亮; Little Brent E.; Chu Sai Tak; 竹内繁樹

  2025年第72回応用物理学会春季学術講演会, 15 Mar. 2025

  
• Smoothing of emission spectrum of ultra-broadband visible-infrared quantum correlated photon pairs

  田嶌俊之; 小田哲秀; 向井佑; 久光守; 徳田勝彦; 岡本亮; 竹内繁樹

  2025年第72回応用物理学会春季学術講演会, 15 Mar. 2025

  
• High spectral resolution quantum infrared spectroscopy with finite linewidth pulsed laser excitation

  J.Kaur; Y.Mukai; R.Okamoto; S.Takeuchi

  2025年第72回応用物理学会春季学術講演会, 15 Mar. 2025, Invited

  
• Numerical Analysis of Coupling Efficiency of Nanofiber Bragg Cavity and Single Light Emittervity

  坂本健伍; 嶋崎幸之介; 高島秀聡; 竹内繁樹

  2025年第72回応用物理学会春季学術講演会, 15 Mar. 2025

  
• Hexagonal Boron Nitride Defect Centers and Photonic Quantum Technology

  竹内 繁樹; 髙島 秀聡

  2025年第72回応用物理学会春季学術講演会, 15 Mar. 2025, Invited

  
• Quantum Sensing Using Entangled Photons

  S. Takeuchi; Y. Mukai; T. Tashima; N. Abe; Y. Eto; R. Okamoto

  International Symposia on Creation of Advanced Photonic and Electronic Devices 2025 and Advanced Quantum Technology for Future 2025, 12 Mar. 2025

  
• Quantum Infrared Spectroscopy with Pulsed Laser Excitation: Towards Ultrafast Infrared Spectroscopy

  J.Kaur, Y.Mukai, R.Okamoto, and S.Takeuchi

  International Symposia on Creation of Advanced Photonic and Electronic Devices 2025 and Advanced Quantum Technology for Future 2025, 12 Mar. 2025

  
• 超広帯域量子赤外分光

  田嶌俊之; 小田哲秀; 向井佑; 久光守; 徳田勝彦; 岡本亮; 竹内繁樹

  光・量子飛躍フラッグシッププログラム（Q-LEAP）第7回シンポジウム, 28 Feb. 2025

  
• 「量子もつれ」が拓く、新しい光センシングの世界

  竹内 繁樹

  公益財団法人 光科学技術研究振興財団, 03 Nov. 2023, Invited

  
• 量子赤外分光 － 量子もつれ光を用いた新しいセンシング技術

  竹内 繁樹

  赤外量子分光QFTIRおよび関連の光量子技術, 26 Dec. 2024

  
• 拡がる光量子センシングの世界

  竹内 繁樹

  第５回光量子センシングワークショップ, 29 Nov. 2024

  
• 光量子センシングの現状と展望

  竹内繁樹

  2024年微小光学研究会, 05 Aug. 2024, Invited

  
• 光量子センシングの現状と展望

  竹内 繁樹

  光圧コロキアム(石原・笹木先生）, 06 Jun. 2024

  
• Ultra-broadband Quantum Infrared Spectroscopy

  S.Takeuchi

  京都大学技術研修会, 03 Apr. 2024

  
• 量子もつれ光子対を利用した量子 計測デバイスの研究

  竹内 繁樹

  第12回領域会議（量子計測・センシング：量子固体Flagshipプロジェクト+基礎基盤研究）, 25 Dec. 2024

  
• 光量子センシングの現状と展望

  竹内 繁樹

  マイクロ固体フォトニクス研究会, 18 Dec. 2024, Invited

  
• Ultra-broadband quantum infrared spectroscopy

  T Tashima; Y Mukai; M Arahata; N Oda; M Hisamitsu; K Tokuda; R Okamoto; S Takeuchi

  International School and Symposium on Nanodevices and quanTum Technologies (ISNTT) 2024, 03 Dec. 2024

  
• リッジ導波路型擬似位相整合素子を用いた高感度量子赤外分光の実現に向けて

  岸田 駿人; 向井 佑; 久光 守; 徳田 勝彦; 岡本 亮; 竹内 繁樹

  第51回量子情報技術研究会 (QIT51), 26 Nov. 2024

  
• 光量子センシングの現状と展望

  竹内 繁樹

  フォトニクス技術フォーラム 第３回研究会, 14 Nov. 2024, Invited

  
• Quantum sensing using ultra-broadband frequency-entangled photons

  Shigeki Takeuchi

  Sensing with Quantum Light 2024, 30 Oct. 2024

  
• Spectral resolution of quantum infrared spectros-copy with pulsed laser excitation

  Jasleen Kaur; Yu Mukai; Ryo Okamoto; Shigeki Takeuchi

  Sensing with Quantum Light 2024, 28 Oct. 2024

  
• Ultra-broadband quantum infrared spectroscopy

  T Tashima; Y Mukai; M Arahata; N Oda; M Hisamitsu; K Tokuda; R Okamoto; S Takeuchi

  Quantum Innovation 2024, 22 Oct. 2024

  
• Single photon emission from defect centers in hexagonal boron nitride with selective anti-Stokes excitation

  Yudai Okashiro; Hideaki Takashima; Konosuke Shimazaki; Kazuki Suzuki; Yu Mukai

  Quantum Innovation 2024, 22 Oct. 2024

  
• Quantum sensing using entangled photons

  Shigeki Takeuchi

  ISOM'24(International Symposium on Imaging, Sensing, and Optical Memory), 21 Oct. 2024, Invited

  
• 量子もつれ光を利用した光量子センシングの現状と展望

  竹内 繁樹

  第497回光産業技術振興協会マンスリーセミナー, 08 Oct. 2024, Invited

  
• 帯域可視赤外量子もつれ光源を用いた量子赤外分光計測

  田嶌俊之、向井佑、岡本亮、荒畑雅也、小田哲秀、久光守、徳田勝彦、竹内繁樹

  東北大学第 1 回CSRN量子技術セミナー, 04 Oct. 2024, Invited

  
• Spectral resolution of quantum Fourier transform infrared spectroscopy using pulsed laser excitation

  Jasleen Kaur; Yu Mukai; Ryo Okamoto; Shigeki Takeuchi

  The 85th JSAP Autumn Meeting 2024, 20 Sep. 2024

  
• 巡回対称性を利用した W 状態のコヒーレント一括測定

  朴 渠培、 岡本 亮、 ホフマン ホルガ、 竹内 繁樹

  2024年日本物理学会 第79回年次大会, 18 Sep. 2024

  
• Current status and future prospects of photonics quantum sensing

  竹内 繁樹

  JASISトピックスセミナー, 04 Sep. 2024, Invited

  
• 多光子多モード量子もつれ状態に関する研究の紹介

  藤江亮輔, 岡本亮, 竹内繁樹

  QIH・MS6・Q-LEAPサマースクール2024, 04 Sep. 2024

  
• オンチップマイクロリング共振器によって生成した周波数もつれ光子対の評価

  後藤啓文; 岡本亮; BrentE. Little; Sai TakCH; 竹内繁樹

  QIH・MS6・Q-LEAPサマースクール2024, 04 Sep. 2024

  
• 広帯域量子赤外分光

  田嶌俊之、向井佑、荒畑雅也、小田哲秀、久光守、徳田勝彦、岡本亮、竹内繁樹

  日本学術会議国際光デー記念シンポジウム～量子技術とレーザー科学の最前線～, 25 Jul. 2024

  
• Quantum

  Shigeki Takeuchi

  Quantum Bridge: Bridging the UK and Japan in Semiconductor, Quantum, and Photonics Collaboration, 10 Jul. 2024, Invited

  
• [OIST] THESIS PROPOSAL EXAMINATION

  Shigeki Takeuchi

  [OIST] THESIS PROPOSAL EXAMINATION, 09 Jul. 2024, Invited

  
• 量子もつれ光子対を利用した量 子計測デバイスの研究

  竹内 繁樹

  第11回領域会議（量子計測・センシング：量子固体Flagshipプロジェクト＋基礎基盤研究）, 01 Jul. 2024

  
• 量子もつれ光を利用した、光量子センシングの現状と展望

  竹内 繁樹

  令和6年度第2回量子技術研究会, 28 Jun. 2024, Invited

  
• スラブ導波路型疑似位相整合素子による超広帯域もつれ光子対生成に関する研究

  鈴木大寛; 阿部尚文; 久光守; 徳田勝彦; 岡本亮; 竹内繁樹

  第50回量子情報技術研究会(QIT50), 28 May 2024

  
• オンチップマイクロリング共振器によって生成した光子対における周波数もつれの評価

  後藤啓文; 岡本亮; B E.Little; ST. CHU; 竹内繁樹

  第50回量子情報技術研究会(QIT50), 28 May 2024

  
• 極低温下動作用共振器内臓ナノ光ファイバの結合効率の数値解析

  坂本健吾; 嶋崎幸之介; 高島秀聡; 竹内繁樹

  第50回量子情報技術研究会(QIT50), 28 May 2024

  
• 光量子センシングの現状と展望

  S.Takeuchi

  次世代センサ協議会シンポジウム, 17 May 2024, Invited

  
• Selective anti-Stokes excitation of a single defect center in hexagonal boron

  Y.Okashiro; H.Takashima; K.Shimazaki; K.Suzuki; Y.Mukai; I.Aharonovich; S.Takeuchi

  CLEO2024, 06 May 2024

  
• Quantum information technologies using photons -entangled photon sources, single light emitters, and their applications -

  S.Takeuchi

  The 19th IEEE International Conference on Nano/Micro Engineered and Molecular Sustems, 03 May 2024, Invited

  
• Quantum photon sources for sensing and imaging

  S.Kurimura; R.Okamoto; S.Takeuchi

  Laser Display and Lighting Conference 2024 (LDC2024), 25 Apr. 2024, Invited

  
• シングルパスパラメトリック下⽅変換光において観測されたスペクトル領域での⼲渉縞

  宮田龍一; 塗谷 睦生; 衞藤雄二郎; 竹内繫樹

  2024年第71回応用物理学会春季学術講演会, 25 Mar. 2024

  
• Realization on Nonlinear quantum interferometer with Fibereized path

  Y.Yamada; Y.Mukai; H.Takashima; R.Okamoto; S.Takeuchi

  2024年第71回応用物理学会春季学術講演会, 25 Mar. 2024

  
• ナノダイヤモンドへのイオン注⼊により作製したシリコン空孔中⼼内包ナノダイヤモンドの極低温評価

  嶋﨑幸之介; 鈴木和樹; 坂本健伍; 岡城勇大; 阿部浩之; 大島武; 高島秀聡; 竹内繫樹

  2024年第71回応用物理学会春季学術講演会, 25 Mar. 2024

  
• GaSe結晶による波⻑可変広帯域可視-遠⾚外もつれ光⼦対⽣成

  谷口雄哉; 向井佑; 岡本亮; 竹内繫樹

  2024年第71回応用物理学会春季学術講演会, 23 Mar. 2024

  
• 光量子センシング研究拠点

  竹内 繁樹

  日本工学アカデミー関西支部2023年度下半期（第11回）講演会, 19 Mar. 2024, Invited

  
• Quantum enhanced optical sensing using entangled light

  R.Okamoto; Y.Mukai; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2024, 05 Mar. 2024, Invited

  
• Experimental demonstration of W-state projection measurement based on cyclic qubit-shift symmetry

  G.Park; R.Okamoto; H.F.Hofmann; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2024, 05 Mar. 2024

  
• Study on spectral resolution of quantum fourier transform infrared spectroscopy

  J.Kaur; Y.Mukai; R.Okamoto; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2024, 05 Mar. 2024

  
• Cryogenic temperature evalution of nanodiamonds containing silicon-vacancy centers by Ion implantation

  K.Shimazaki; K.Suzuki; K.Sakamoto; Y.Okashiro; H.Abe; T. Ohshima; H.Takashima; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2024, 05 Mar. 2024

  
• 光量子情報・光量子計測の最近のトピックス

  竹内 繁樹

  通研共同プロジェクト研究会「コヒーレント光・マイクロ波融合通信・計測システムに関する研究」, 29 Feb. 2024, Invited

  
• Ultra-broadband quantum infrared spectroscopy

  S.Takeuchi; T.Tashima

  SPIE Photonics West 2024, 01 Feb. 2024, Invited

  
• 光子のふしぎと、光量子技術の拓く世界

  竹内繫樹

  日本物理学会大阪支部2023年度公開シンポジウム 物理と情報の融合：量子コンピュータって何だろう？, 10 Dec. 2023, Invited

  
• Nonophotonics for photonic qunatum technology

  H.Takashima; K.Shimazaki; K.Suzuki; T.Tashima; S.Takeuchi

  物質・デバイス領域共同研究セミナー, 30 Nov. 2023, Invited

  
• Analysis of ultra-wide tunability of nanofiber Bragg cavity

  高島 秀聡; A.Schell; 竹内繁樹

  Optics & Photonics Japan 2023, Nov. 2023

  
• Experimental criteria for the classification of multi-photon correlations

  G.Park; R.Okamoto; H F. Hofmann; S.Takeuchi

  Quamtum Innovation 2023, 16 Nov. 2023

  
• Quantum infrared spectroscopy with ATR method

  T.Kurita; R.Okamoto; M.Arahata; T.Tashima; H.Ota; K.Tokuda; S.Takeuchi

  Quamtum Innovation 2023, 16 Nov. 2023

  
• 光量子技術の現状と展望

  竹内繫樹

  第35回情報伝送と信号処理ワークショップ テーマ「生命・情報・量子の融合で見たいを創る」, 09 Nov. 2023, Invited

  
• ナノフォトニクスを利用した量子技術の実現に向けて

  高島秀聡; 嶋﨑幸之介; 鈴木和樹; 田嶌俊之; 竹内繁樹

  JAAS年次大会2023「会いに行ける科学者フェス」, 09 Oct. 2023

  
• Photonic quantum science and technology

  S.Takeuchi

  Okinawa School in Physics 2023 : Coherent Quantum Dynamics, 01 Oct. 2023, Invited

  
• Experimental demonstration of multiphoton quantum correlation beyond the linear optics limit

  G.Park; R.Okamoto; H. F Holger; S.Takeuchi

  International Seminar Dojo 2023, 28 Sep. 2023

  
• Periodicity of fourier walks on complete graphs with sellf-loops

  Y.Okamoto; R.Okamoto; S.Takeuchi

  International Seminar Dojo 2023, 28 Sep. 2023

  
• チャープ型SLT疑似位相整合素子による広帯域量子もつれ光子対スペクトルの解析

  小田哲秀; 田嶌俊之; 曹博; 阿部尚文; 向井佑; 久光守; 徳田勝彦; 竹内繫樹

  第84回応用物理学会秋季学術講演会, 23 Sep. 2023

  
• 量子赤外分光へのATR法の実装

  栗田寅太郎; 向井佑; 岡本亮; 荒畑雅也; 田嶌俊之; 太田宏; 徳田勝彦; 竹内繁樹

  第84回応用物理学会秋季学術講演会, 23 Sep. 2023

  
• チャープ型疑似位相整合素子による広帯域量子赤外吸収分光測定

  田嶌俊之; 向井佑; 岡本亮; 荒畑雅也; 小田哲秀; 久光守; 徳田勝彦; 竹内繁樹

  第84回応用物理学会秋季学術講演会, 23 Sep. 2023

  
• Density control of single-photon sources formed at a SiO2/SiC interfac

  M.Kaneko; H.Takashima; S.Takeuchi; T Kimoto

  Sep. 2023

  
• Ultra-broadband quantum infrared spectriscopy

  S.Takeuchi

  Quantum2023, 13 Sep. 2023, Invited

  
• Experimental demonstration of multiphoton quantum correlation beyond the linear optics limit

  G.Park; R.Okamoto; H. F Holger; S.Takeuchi

  Quantum2023, 13 Sep. 2023

  
• Generation and manipulation of broadband frequency entangled photons

  S.Takeuchi

  SPIE Optics+Photonics, 21 Aug. 2023, Invited

  
• Effect of pump laser linewidth on nonlinear quantum interferometric fringes

  J.Kaur; Y.Mukai; R.Okamoto; S.Takeuchi

  SPIE Optics+Photonics, 21 Aug. 2023

  
• 量子もつれ光を用いた光量子センシング

  向井佑; 岡本亮; 竹内繁樹

  公開シンポジウム：光がもたらす未来社会～ICOの新たな発展に向けて～, 10 Jul. 2023

  
• Quantum information technologies using photons-entangled photon sources, single light emitters, and their applications-

  S.Takeuchi

  KU-VUW Joint Workshop 2023, 29 Jun. 2023, Invited

  
• 「量子もつれ」にノーベル物理学賞～「物理的実在とは何か」に挑んだ科学者達～

  竹内 繁樹

  第48回量子情報技術研究会（QIT48), 29 May 2023, Invited

  
• スーパーサーマルライトを用いた2光子吸収の増強に向けた研究

  宮田龍一; 塗谷睦生; 衞藤雄二郎; 竹内繁樹

  第48回量子情報技術研究会（QIT48), 29 May 2023

  
• Single photon emission from single defect center in hexagonal boron nitride by Anti-Stocks excitation

  岡城勇大; 嶋崎幸之介; 鈴木和樹; 高島秀聡; A. Igor; 竹内繁樹

  第48回量子情報技術研究会（QIT48), 29 May 2023

  
• Effect of pump laser linewidth on nonlinear quantum interferometric fringes

  J.Kaur; R.Okamoto; S.Takeuchi

  第48回量子情報技術研究会（QIT48), 29 May 2023

  
• 多光子量子相関の線形光学素子の限界に関する実験的検証

  朴渠培; 岡本亮; ホフマンホルガ; 竹内繫樹

  第48回量子情報技術研究会（QIT48), 29 May 2023

  
• Quantum infrared spectroscopy in the fingerprint region

  向井佑; 岡本亮; 竹内繁樹

  第48回量子情報技術研究会（QIT48), 29 May 2023

  
• ナノダイヤモンド中へのイオン注入により作製したシリコン空孔中心の極低温評価

  嶋﨑幸之介; 鈴木和樹; 岡城勇大; 高島秀聡; 阿部浩之; 大島武; 竹内繁樹

  第48回量子情報技術研究会（QIT48), 29 May 2023

  
• Single photon emission from single defect center in hexagonal boron nitride by long wavelength excitation

  岡城勇大; 嶋崎幸之介; 鈴木和樹; 高島秀聡; A.Igor; 竹内繫樹

  第70回応用物理学会春季学術講演会, 16 Mar. 2023

  
• 単一発光体を用いた連続適応量子状態推定の実現

  井上真奈人; 野原紗季; 嶋崎幸之介; 高島秀聡; 岡本亮; T.T Trong; A.Igor; 竹内繫樹

  第70回応用物理学会春季学術講演会, 16 Mar. 2023

  
• Toward observing two-photon absorption of fluorescent molecules using entangled photon pairs

  第; 回応用物理学会春季学術講演会

  佐々木駿輔、阿部尚文、斎藤凌矢、久光守、徳田勝彦、岡本亮、竹内繫樹, 16 Mar. 2023

  
• Petal-Shaped Beam Generation for a Two-dimensional Quantum Walk with Helical Boundary Conditions

  Y.Okamoto; H.Obuse; S.Takeuchi; R.Okamoto

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2023, 14 Mar. 2023

  
• Effect of Pump Laser Linewidth on Nonlinear Quantum Interferometic Fringes

  J.Kaur; Y.Mukai; R.Okamoto; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2023, 14 Mar. 2023

  
• Creation of Single SiV Centers in Nanodiamonds by Ion Implantation

  K.Shimazaki; K.Suzuki; H.Takashima; H.Abe; T.Ohshima; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2023, 14 Mar. 2023

  
• Analysis of Conditional Quantum Coherence in Two-photon Multi-mode States Beyond Linear Optical Limits

  G.Park; R.Okamoto; H. F Hofmann; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2023, 14 Mar. 2023

  
• Efficient and broadband generation of visible-infrared entangled photon pairs using a ridge waveguide quasi-phase-matched device

  M.Arahata; B.Cao; Y.mukai; T.Tashima; M.Hisamitsu; K.Tokuda; R.Okamoto; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2023, 14 Mar. 2023

  
• 光量子センシングの現状と展望

  S.Takeuchi

  センシング技術応用研究会第222回研究例会, 18 Jan. 2023, Invited

  
• Optimizing the coupling efficiency of collinear spontaneous parametric down-conversion photon pairs into single-mode fibers

  G. Park; N. Schwaller; R.Okamoto; S.Takeuchi

  第47回量子情報技術研究会（QIT47), 08 Dec. 2022

  
• Creation of Silicon Vacancy Centers in Detonation Nanodiamonds by High Temperature Annealing

  K.Shimazaki; H.Kawaguchi; H.Takashima; T.Segawa; F.So; D.Terada; S.Onoda; T.Ohshima; S.Takeuchi

  The 23rd RIES-Hokudai International Symposium拓[Taku], 05 Dec. 2022

  
• Quantum science and technology using entangled photons

  S.Takeuchi

  The 23rd RIES-Hokudai International Symposium拓[Taku], 05 Dec. 2022, Invited

  
• Effect of pump laser linewidth on nonlinear quantum interferometric fringes

  J.Kaur; Y.Mukai; R.Okamoto; S.Takeuchi

  J.Kaur, Y.Mukai, R.Okamoto and S.Takeuchi, 29 Nov. 2022

  
• Highly efficient and ultra-broadband photon pair source using chirped quasiphase matching slab waveguide matching slab waveguide

  B.Cao; K.Hayama; S.Suezawa; M.Hisamitsu; K.Tokuda; S.Kurimura; R.Okamoto; S.Takeuchi

  Quantum Innovation 2022/5th IFQMS, 29 Nov. 2022

  
• 光量子センシングの現状と展望

  S.Takeuchi

  情報計測オンラインセミナー, 15 Oct. 2022, Invited

  
• Highly effective broadband frequency correlated photon-pair generation using chirped quasi-phase matching slab waveguide

  B.Cao; K.Hayama; R.Okamoto; M.Hisamitsu; K.Tokuda; S.Kurimura; S.Takeuchi

  2022年第83回応用物理学会秋季講演会, 20 Sep. 2022

  
• 六方晶窒化ホウ素欠陥中心の単一光子源応用

  高島秀聡; 田嶌俊之; S. Andreas; T T. Toan; A. Igor; 竹内繫樹

  2022年第83回応用物理学会秋季講演会, 20 Sep. 2022, Invited

  
• オンチップリング共振器を用いた超広帯域周波数もつれ光子対の発生

  濱山友志; 杉浦健太; 中村暖; 岡本亮; Brent E; C.Sai Tak; 竹内繫樹

  2022年第83回応用物理学会秋季講演会, 20 Sep. 2022

  
• イオン注入法による単一シリコン欠陥中心内包ナノダイヤモンドの作製

  鈴木和樹; 嶋崎幸之介; 高島秀聡; 阿部浩之; 大島武; 竹内繫樹

  2022年第83回応用物理学会秋季講演会, 20 Sep. 2022

  
• リッジ導波路型疑似位相整合素子による可視-赤外域量子もつれ光子対の高効率生成

  荒畑雅也; 曹博; 向井佑; 田嶌俊之; 久光守; 徳田勝彦; 岡本亮; 竹内繫樹

  2022年第83回応用物理学会秋季講演会, 20 Sep. 2022

  
• 指紋領域における量子赤外分光

  Y.Mukai; R.Okamoto; S.Takeuchi

  2022年第83回応用物理学会秋季講演会, 20 Sep. 2022

  
• 中赤外域超伝導ナノワイヤ単一光子検出器の評価

  美馬覚; 知名史博; 藪野正裕; 宮崎茂之; 三木茂人; 蒲優樹; 田嶌俊之; 荒畑雅也; 向井佑; 岡本亮; 竹内繫樹; 寺井弘高

  2022年第83回応用物理学会秋季講演会, 21 Sep. 2022

  
• Experimental generation of two-photon three-mode non-Fock state using remote state preparation

  G.Park; R.Okamoto; H F.Hofmann; S.Takeuchi

  APPC15, 25 Aug. 2022

  
• The effect of the finite linewidth of the pump laser on a nonlinear quantum interferometer

  J.Kaur; Y.Mukai; R.Okamoto; S.Takeuchi

  APPC15, 24 Aug. 2022

  
• Frequency-entangled photon sources and their application to quantum sensing

  S.Takeuchi

  SPIE Optics+Photonics 2022, 21 Aug. 2022, Invited

  
• Creation of Sillicon Vacancy Center in Detonation Nanodiamonds by High Temperature Annealing

  K.Shimazaki; H.Kawaguchi; H.Takashima; T.Segawa; F.So; D.Terada; S.Onoda; T.Ohshima; M.Shirakawa; S.Takeuchi

  CLEO-PR2022/ISOM'22/ODF'22, 04 Aug. 2022

  
• Quantum Fourier-transform infrared spectroscopy in the far-infrared region

  Y.Mukai; R.Okamoto; S.Takeuchi

  CLEO-PR2022/ISOM'22/ODF'22, 04 Aug. 2022

  
• Nanophotonics for quantum information and quantum sensing

  H.Takashima; A.Fukuda; H.Kawaguchi; K.Fukushige; K Shimazaki; T.Tashima; S.Takeuchi

  The 20th International Symposium on the Physics of Semiconductors and Applications (ISPSA2022), Invited

  
• 光量子センシングの現状と展望

  竹内 繁樹

  第1回量子ソフトウェアシンポジウム：量子技術と量子ソフトウェアの未来, 14 Jul. 2022, Invited

  
• イオン注入法を用いた極微ナノダイヤモンドへの単一SiVセンターの作製

  鈴木和樹; 嶋﨑幸之介; 高島秀聡; 阿部浩之; 大島武; 竹内繫樹

  第46回量子情報技術研究会（QIT46), 30 May 2022

  
• オンチップリング共振器を用いた超広帯域周波数もつれ光子対発生の検証

  濱山友志; 杉浦健太; 中村暖; 岡本亮; B E.Little; S T.Chu; 竹内繫樹

  第46回量子情報技術研究会（QIT46), 30 May 2022

  
• 進化戦略アルゴリズムを用いた周波数もつれ光子対の時間相関幅圧縮の実現

  斎藤凌矢; 藤田一夢; 佐々木駿輔; 阿部尚文; 久光守; 徳田勝彦; 岡本亮; 竹内繫樹

  第46回量子情報技術研究会（QIT46), 30 May 2022

  
• ヘリカル境界条件を有する2次元量子ウォークの実現に向けてI～花弁状ビームの生成と評価～

  岡本悠太郎; 小布施秀明; 竹内繁樹; 岡本亮

  第46回量子情報技術研究会（QIT46), 30 May 2022

  
• 中赤外域超伝導ナノワイヤー単一光子検出器の開発

  美馬覚; 知名史博; 藪野正裕; 宮嶋茂之; 三木茂人; 蒲優樹; 田嶌俊之; 荒畑雅也; 山田悠介; 向井佑; 岡本亮; 竹内繁樹; 寺井弘高

  2022年第69回応用物理学会春季学術講演会, 24 Mar. 2022

  
• Complex transmittance measurements using quantum Fourier-transform infrared spectroscopy

  Y.Muaki; M.Arahata; T.Tashima; R.Okamoto; S.Takeuchi

  Sensing with Quantum Light 754. WE-Heraeus-Seminar, 28 Sep. 2021

  
• Efficient entangled photon sources and their applications

  S.Takeuchi

  Sensing with Quantum Light 754. WE-Heraeus-Seminar, 28 Sep. 2021, Invited

  
• A wavelength variable visible-infrared photon pair source via spontaneous parametric downconversion in the mid-infrared region

  M.Arahata; Y.Mukai; T.Tashima; B.Cao; R.Okamoto; S.Takeuchi

  Sensing with Quantum Light 754. WE-Heraeus-Seminar, 28 Sep. 2021

  
• Evaluation of broadband visible-infrared entangled photon pair generation using chirp quasi-phase matching devices

  T.Tashima; Y.Gama; M.Arahata; Y.Mukai; M.Hisamitsu; K.Tokuda; R.Okamoto; S.Takeuchi

  第82回応用物理学会秋季学術講演会, 12 Sep. 2021

  
• 混合状態に対する 1 パラメータ連続適応量子状態推定

  M.Inoue; S.Nohara; R.Okamoto; A.Fujiwara; S.Takeuchi

  第82回応用物理学会秋季学術講演会, 12 Sep. 2021

  
• Dispersion control of frequency entangled photon pairs to minimize temporal correlation

  I.Fujita; M.Hisamitsu; K.Tokuda; R.Okamoto; S.Takeuchi

  第82回応用物理学会秋季学術講演会, 12 Sep. 2021

  
• The evaluation of superconducting nanowire single photon detectors for mid-infrared wavelengths

  Y.Gama; T.Tashima; M.Arahata; Y.Yamada; Y.Mukai; F.China; M.Yabuno; S.Mima; S.Miyazaki; S.Miki; H.Terai; R.Okamoto; S.Takeuchi

  第82回応用物理学会秋季学術講演会, 12 Sep. 2021

  
• 波⻑2-5 μm域における波⻑可変な広帯域赤外量子吸収分光測定の実証

  M.Arahata; Y.Mukai; T.Tashima; R.Okamoto; S.Takeuchi

  第82回応用物理学会秋季学術講演会, 12 Sep. 2021

  
• Focusing constraints on coupling dfficiency of collinear type-l degenerated SPDC photon pairs into a single-mode fiber

  N.Schwaller; G.Park; R.Okamoto; S.Takeuchi

  SPIE Optical Engineering + Applications, 12 Sep. 2021

  
• Demonstration of quantum optical coherence tomography with resolution of less than 3μm3

  N.Abe; T.Horino; Y.Kawaguchi; R.Okamoto; S.Takeuchi

  第82回応用物理学会秋季学術講演会, 12 Sep. 2021

  
• 光子を用いた量子情報技術の現状と展望

  S.Takeuchi

  2021年度第2回非ノイマン型情報処理へ向けたデバイス技術分科会, 26 Aug. 2021, Invited

  
• A wavelength variable visible-infared photon pair source using a LiNbO3 crystal in the mid-infrared redion

  M.Arahata; Y.Mukai; B.Cao; R.Okamoto; S.Takeuchi

  SPIE Optical Engineering + Applications, 02 Aug. 2021

  
• Efficient analysis of entangled photons and single photons

  S.Takeuchi

  SPIE Optical Engineering + Applications, 01 Aug. 2021, Invited

  
• Fabrication of silicon-vacancy centers in nanodiamonds

  K.Shimazaki; H.Kawaguchi; H.Takashima; T.Segawa; F.T.So; H.Terada; S.Onoda; T.Oshima; M.Shirakawa; S.Takeuchi

  第44回量子情報技術研究会（QIT44), 24 May 2021

  
• Quantum sensing using entangled photons

  S.Takeuchi

  Optics & Photonics Japan 2020 SJ-OSA-OSK Joint Symposia on Optica, 14 Nov. 2020, Invited

  
• 光量子技術の現状と展望-量子コンピュータと量子センシング-

  S.Takeuchi

  京都光技術研究会 光ものづくりセミナー, 18 Sep. 2020, Invited

  
• Fabrication of nanofiber Bragg cavities using s Neon ion beam

  H.Takashima; H.Kawaguchi; K.Shimazaki; T.Tashima; S.Takeuchi

  第81回応用物理学会秋季学術講演会, 10 Sep. 2020, Invited

  
• ナノダイアモンド中の窒素欠陥中心におけるラビ振動の測定

  H.Kawaguchi; K.Fukushige; T.Tashima; H.Takashima; S.Takeuchi

  第81回応用物理学会秋季学術講演会, 10 Sep. 2020

  
• Broadband generation using a silicon nitride ring resonator

  K.Sugiura; Z.Yin; H.Takashima; R.Okamoto; S.Yokoyama; S.Takeuchi

  第81回応用物理学会秋季学術講演会, 10 Sep. 2020

  
• Near-infrared transmittance measurement by Fourier transform

  Y.Mukai; M.Arahata; T.Tashima; R.Okamoto; S.Takeuchi

  第81回応用物理学会秋季学術講演会, 10 Sep. 2020

  
• Study on the spatical separation of entangled photon pairs in the same spatial mode

  Y.Kamei; B.Cao; R.Okamoto; S.Takeuchi

  第81回応用物理学会秋季学術講演会, 10 Sep. 2020

  
• Quantum sensing using entangled photons

  S.Takeuchi

  The 81st JSAP Autum Meeting 2020 JSAP-OSA Joint Symposia 2020, 10 Sep. 2020, Invited

  
• Photonic quantum sensing using entangled photons

  S.Takeuchi

  Sensing with Quantun Light 2020, 07 Sep. 2020, Invited

  
• Nanofiber integrated single light emitters for efficient single photon

  S.Takeuchi

  SPIE Optics+Photonics 2020 Digital, 24 Aug. 2020, Invited

  
• Quantum sensing using entangled photons

  S.Takeuchi

  India-Japan webinar on quantum technologies, 28 Jul. 2020, Invited

  
• Highly efficient broadband frequency entangled photon pair sources for optical quantum applications

  B.Cao; K.Hayama; M.Hisamitsu; K.Tokuda; S.Kurimura; R.Okamoto; S.Takeuchi

  CLEO Virtual Technical Conference, 14 May 2020

  
• Transferring a selective nanodaiamond embedding a single NV center to an optical nanofiber using a tungsten probe

  T.Tashima; H.Takashima; S.Takeuchi

  日本物理学会2020年年次大会, 2020

  
• Transferring a selective nanodiamonnd embedding a single NV center to an optical nanofiber using a tungsten probe

  K.Fukushige; H.Kawaguchi; K.Shimazaki; T.Tashima; A.Schell; H.Takashima; S.Takeuchi

  第67回応用物理学会春季学術講演会, 14 Mar. 2020

  
• Visible-infrared region quantum entanglement photon sources by PPMｇSLT device

  Y.Gama; M.Arahata; T.Tashima; Y.Mukai; M.Hisamitsu; K.Tokuda; R.Okamoto; S.Takeuchi

  第67回応用物理学会春季学術講演会, 14 Mar. 2020

  
• Fabrication of silicon-vacancy centers in nanodiamonds by detonation

  K.Shimazaki; H.Kawaguchi; H.Takashima; T.Segawa; F T.So; D.Terada; S.Onoda; T.Oshima; M.Shirakawa; S.Takeuchi

  第67回応用物理学会春季学術講演会, 14 Mar. 2020

  
• The reserch of optimally coupling Type-I parametric down converted photon pairs into a single mode fiber

  G.Park; T.Kiyohara; R.Okamoto; S.Takeuchi

  第67回応用物理学会春季学術講演会, 14 Mar. 2020

  
• Compression of the temporal correlation width of frequency entangled photon pairs

  M.Yoshikawa; M.Hisamitsu; K.Tokuda; S.Kurimura; R.Okamoto; S.Takeuchi

  第67回応用物理学会春季学術講演会, 14 Mar. 2020

  
• Fabrication of nanofiber Bragg cavities with lower acceleration voltage to avoid process damage

  H.Takashima; A.Fukuda; H.Kawaguchi; K.Fukushige; K.Shimazaki; T.Tashima; S.Takeuchi

  第67回応用物理学会春季学術講演会, 13 Mar. 2020, Invited

  
• Efficient coupling of Type-I degenerate parametric down converted photon pairs into a single-mode fiber

  G.Park; T.Kiyohara; R.Okamoto; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2020, 10 Mar. 2020

  
• Tunable broadband visible-infrared entangled photon source using a LiNbO3 crystal

  M.Arahata; Y.Mukai; B.Cao; R.Okamoto; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2020, 10 Mar. 2020

  
• Confirmation of the frequency correlation of the photon-pairs generated in a ring resonator

  K.Sugiura; R.Okamoto; S T.Chu; B E.Littlr; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2020, 10 Mar. 2020

  
• Experimental demonstration of adaptive quantum state estimation for dynamic quantum states

  S.Nohara; R.Okamoto; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2020, 10 Mar. 2020

  
• Efficient generation of heralded multi-photon parallel state for realizing a large-scale photonic quantum circuit

  T.Kiyohara; R.Okamoto; S.Takeuchi

  International Symposium on Creation of Advanced Photonic and Electronic Devices 2020, 10 Mar. 2020

  
• Quantum sensing using entangled photons

  S.Takeuchi

  QTS'20 3rd International School on Quantum Technologies, 03 Mar. 2020, Invited

  
• Highly Efficient Broadband Frequency Entangled-Photon Sources

  B.Cao; H.Hayama; Y.Kamei; R.Okamoto; M.Hisamitsu; K.Tokuda; S.Takeuchi

  IFQMS 2019, 18 Dec. 2019

  
• Experimental Demonstration of Adaptive Quantum State Estimation for Dynamic Quantum States

  S.Nohara; R.Okamoto; A.Fujiwara; S.Takeuchi

  IFQMS 2019, 17 Dec. 2019

  
• Tunable Broadband Visible-Infrared Entangled Photon Source using a LiNbO3 Crystal

  M.Arahata; B.Cao; T.Tashima; Y.Mukai; R.Okamoto; S.Takeuchi

  IFQMS 2019, 17 Dec. 2019

  
• Towards Broadband Infrared Quantum Absorption Spectroscopy Based on Nonlinear Interferometer

  Y.Mukai; T.Tashima; M.Arahata; R.Okamoto; S.Takeuchi

  IFQMS 2019, 17 Dec. 2019

  
• Visible-infrared Entangled Photon Sources using Periodically Poled SLT Devices

  T.Tashima; Y.Mukai; M.Arahata; Y.Gama; M.Hisamitsu; K.Tokuda; R.Okamoto; S.Takeuchi

  IFQMS 2019, 17 Dec. 2019

  
• Quantum sensing using entangled photons

  S.Takeuchi

  IFQMS 2019, 17 Dec. 2019

  
• On-chip Broadband Entangled Photon Sources Using HICDG and SiN Waveguide Devices

  K.Sugiura; Z.Yin; X.Cheng; H.Takashima; R.Okamoto; L.Zang; J.Che; P.Wu; S.T.Chu; B.E.Little; S.Yokoyama; S.Takeuchi

  IFQMS 2019, 17 Dec. 2019

  
• Nanofiber integrated single light emitters for efficient single photon sources

  S.Takeuchi

  ICAMD2019, 11 Dec. 2019, Invited

  
• 光量子センシングの現状と展望

  竹内 繁樹

  量子ICTフォーラム技術シンポジウム, 13 Nov. 2019, Invited

  
• Fabrication of high-Q factor nanofiber Bragg cavity using a helium ion microscope

  T.Takashima; A.Fukuda; H.Maruya; T.Tashima; A.Schell; S.Takeuchi

  AVS 66th ISE 2019, 24 Oct. 2019

  
• 光子を操る-光量子計測とその展望

  竹内 繁樹

  第17回フォトニクス・イノベーションセミナー, 23 Oct. 2019, Invited

  
• hBN 欠陥中心とナノファイバブラック共振器のカップリング実験

  T.Tashima; H.Takashima; A.Schell; T.Tran; I.Aharonovich; S.Takeuchi

  2019年日本物理学会秋季大会, 2019

  
• Design and fabrication of a silicon nitride ring resonator for on-chipbroadband entangled photon sources

  Z.Yin; K.Sugiura; X.Cheng; H.Takashima; R.Okamoto; S.Yokoyama; S.Takeuchi

  第38回電子材料シンポジウム 2019, 11 Oct. 2019

  
• Fabrication of nanofiber Bragg cavity with high Q factor using a He ion microscope

  H.Takashima; A.Fukuda; T.Tashima; A.Schell; S.Takeuchi

  第38回電子材料シンポジウム 2019, 11 Oct. 2019

  
• Quantum Imaging

  S.Takeuchi

  High-LEVEL DIALOGUE ON "QUANTUM TECHNOLOGIES-CHALLENGE AND POTENTIAL FOR REAL WORLD APPLICATIONS", 10 Oct. 2019, Invited

  
• 六方晶窒化ホウ素中の 単一 結晶 欠陥の双極子方向解析

  H.Takashima; K.Ishihara; H.Maruya; T.Tashima; S.Nohara; R.Okamoto; A.Schell; T.T.Tran; I.Aharonovich; S.Takeuchi

  第80回応用物理学会 秋季学術講演会, 21 Sep. 2019

  
• 多光子多モードシステム間もつれ状態を用いたノンフォック状態生成 に向けて

  I.Matsumoto; T.Kiyohara; R.Okamoto; H.F.Hofmann; S.Takeuchi

  第80回応用物理学会 秋季学術講演会, 21 Sep. 2019

  
• LiNbO3 結晶 を用いた 可視 赤外域量子もつれ光子対の生成と評価

  M.Arahata; B.Cao; R.Okamoto; S.Takeuchi

  第80回応用物理学会 秋季学術講演会, 21 Sep. 2019

  
• 時間的に変化する状態の適応量子状態推定の実現

  S.Nohara; R.Okamoto; A.Fijiwara; S.Takeuchi

  第80回応用物理学会 秋季学術講演会, 21 Sep. 2019

  
• Designandfabricationofasiliconnitrideringresonatorforon­chip broadbandentangledphotonsources

  Z.Yin; K.Sugiura; X.Cheng; H.Takashima; R.Okamoto; S.Yokoyama; S.Takeuchi

  第80回応用物理学会 秋季学術講演会, 21 Sep. 2019

  
• 3次元磁場制御 による ナノ ダイヤモンド 中単一 窒素欠陥中心の軸方向同定

  K.Fukushige; H.Kawaguchi; T.Tashima; H.Takashima; S.Tkeuchi

  第80回応用物理学会 秋季学術講演会, 20 Sep. 2019

  
• High Efficiency Ultra-Broadband Frequency Entanglement Generation with Chirped PPSLT Ridge Waveguides

  B.Cao; R.Okamoto; M.Hisamitsu; K.Tokuda; S.Takeuchi

  合肥 ICEQT 2019, 19 Sep. 2019

  
• 光量子技術の現状と展望

  竹内 繁樹

  2019年度日本冷凍空調学会年次大会, 13 Sep. 2019, Invited

  
• Nanofiber Integrated Single Light Emitters for EfficientSingle Photon Sources

  S.Takeuchi

  Laser Physics Workshop 2019, 09 Jul. 2019

  
• 時間的に変化する光子の偏光量子状態推定

  S.NOhara

  国際光デーシンポジウム2019, 28 Jun. 2019

  
• Highly Efficient Ultra-Broadband Entangled Photon-Pair Generation using a Chirped PPSLT RidgeWaveguide

  B.Cao; R.Okamoto; M.Hisamitsu; K.Tokuda; S.Takeuchi

  Cleo/Europe-EQEC 2019, 27 Jun. 2019

  
• Enhanced direct optical excitation of an NV center via Nanofiber Bragg-cavity : A numerical simulation

  T.Tashima; H.Takashima; S.Takeuchi

  Cleo/Europe-EQEC 2019, 26 Jun. 2019

  
• Determination of the dipole orientation of a single defect in hexagonal boron nitride using vector beam

  H.Takashima; K.Ishihara; H.Maruya; T.Tashima; A.Schell; T.T Tran; I.Aharonovich; S.Takeuchi

  Cleo/Europe-EQEC 2019, 26 Jun. 2019

  
• Nanofiber integrated single light emitters for efficient single photon sources

  Shigeki Takeuchi

  Quantum 2019, 31 May 2019, Invited

  
• Serial-parallel conversion for a stream of single photons using heralding signals

  T.Kiyohara; R.Okamoto; S.Takeuchi

  Quantum 2019, 29 May 2019

  
• 同一空間モードに生成したもつれ光子対の空間的分離に関する研究

  亀井祐希; 曹博; 清原孝行; 岡本亮; 竹内繁樹

  第40回量子情報技術研究会（QIT40), 20 May 2019

  
• LiNbO3結晶を用いた可視-赤外域量子もつれ光子対の生成と評価

  荒畑雅也; 曹博; 岡本亮; 竹内繁樹

  第40回量子情報技術研究会（QIT40), 20 May 2019

  
• 同時計数測定によるオンチップリング共振器のQ値の推定

  杉浦健太; 岡本亮; S T.Chu; B E.Little; 竹内繁樹

  第40回量子情報技術研究会（QIT40), 20 May 2019

  
• Experimental demonstration of adaptive quantum state estimation for dynamic quantum states

  S.Nohara; R.Okamoto; A.Fujiwara; S.Takeuchi

  第40回量子情報技術研究会（QIT40), 20 May 2019

  
• hBNナノフレークとナノファイバ共振器のカップリングの実現に向けて

  T.Tashima; H.Takashima; A.Fukuda; A.Schell; T.T Tran; I Aharonovich; S.Takeuchi

  日本物理学会第74回年次大会, 17 Mar. 2019

  
• Transverse resolition improvement in high resolution quantum OCT

  Y.Kawaguchi; B.Cao; K.Hayama; R.Okamoto; S.Takeuchi

  2019年第66回応用物理学会春季学術講演会, 11 Mar. 2019

  
• Realization of nanophotonic quantum devices using a He ion microscope

  Shigeki Takeuchi

  第66回応用物理楽器春季学術講演会シンポジウム, 11 Mar. 2019, Invited

  
• Serial-parallel conversion for single photons with heralding signals

  T.Kiyohara; R.Okamoto; S.takeuchi

  2019年第66回応用物理学会春季学術講演会, 10 Mar. 2019, Invited

  
• 量子技術とその展望-量子コンピュータの原理から光量子技術まで-

  Shigeki Takeuchi

  量子コンピュータの化学への応用, 19 Feb. 2019, Invited

  
• 光子を用いた量子計測とその展望

  Shigeki Takeuchi

  補償光学や媒質のゆらぎによる影響を受けたイメージング研究会, 23 Jan. 2019

  
• 量子もつれ光源とその応用

  Shigeki Takeuchi

  平成30年電気関係学会関西連合大会, 01 Dec. 2018, Invited

  
• Generation of non-Fock states using entangled two multi-photon multi-mode systems

  I Matsumoto; T.Kiyohara; R.Okamoto; H. Holger; S.Takeuchi

  第39回量子情報技術研究会（QIT39), 26 Nov. 2018

  
• 大強度広帯域周波数もつれ状態の実現と応用

  竹内繁樹

  第3回公開シンポジウム「量子状態の高度な制御に基づく革新的量子技術基盤の創出」, 21 Nov. 2018

  
• 光子を用いた量子計測とその展望

  竹内繁樹

  戦略的創造研究推進事業さきがけ「研究領域・量子技術を適用した生命科学基盤の創出」第3回領域会議, 08 Nov. 2018, Invited

  
• Development of nanofiber Bragg cavity with high Q factor using a He ion microscope

  Shigeki Takeuchi

  H.Takashima, A.Fukuda, T.Tashima, A.W.Schell and S.Takeuchi, 09 Oct. 2018

  
• Photonic quantum circuits and quantum sensing

  Shigeki Takeuchi

  The 13th Japan-US Joint Seminar on Quantum Electronics and Laser Spectroscopy, 28 Sep. 2018, Invited

  
• Serial-parallel conversion for a heralded single photon source

  T.Kiyohara; R. Okamoto; S. Takeuchi

  The 13th Japan-US Joint Seminar on Quantum Electronics and Laser Spectroscopy, 26 Sep. 2018

  
• Realization of a faint light quantum illumination

  R.Okamoto; S.Takeuchi

  2018年第79回応用物理学会秋季学術講演会, 18 Sep. 2018

  
• Fabrication of silicon-vacancy centers in nanodiamonds

  A.Fukuda; Y.Iwabata; A.Schell; H.Takashima; H.Abe; S.Onoda; T.Oshima; S.Takeuchi

  Fabrication of silicon-vacancy centers in nanodiamonds, 10 Sep. 2018

  
• 3-Dimensional magnetic field control for indentification of the orientation of NV centers in diamond

  K.Fukushige; Y.Iwabata; T.Tashima; H.Takashima; S.Takeuchi

  日本物理学会2018年秋季大会, 10 Sep. 2018

  
• Realization of High-Speed Adaptive Quantum State Estimation

  S.Nohara; R.Okamoto; K.Yamagata; A.Fujiwara; S.Takeuchi

  日本物理学会2018年秋季大会, 09 Sep. 2018

  
• Efficient active routing of multiple photons using heralding signals

  T.Kiyohara; R.Okamoto; S.Takeuchi

  日本物理学会2018年秋季大会, 09 Sep. 2018

  
• Study on the temporal correlation measurement of entangled photon pairs

  M.Yoshikawa; T.Deguchi; R.Okamoto; H.H Lim; S.Kurimura; S.Takeuchi

  日本物理学会2018年秋季大会, 09 Sep. 2018

  
• Generation of frequency correlated photon-pairs using an on-chip ring resonator

  K.Sugiura; R.Okamoto; L.Zhang; L.Kang; J.Chen, P.Wu; S.T Chu; S.Takeuchi

  SPIE Optical Engineering + Applications, 20 Aug. 2018

  
• "Serial-parallel conversion for a heralded single photon source "

  T.Kiyohara; R. Okamoto; S. Takeuchi

  SPIE Optical Engineering + Applications, 20 Aug. 2018

  
• Realization of high-speed adaptive quantum state estimation

  S.Nohara; R.Okamoto; K.Yamagata; A.Fujiwara; S.Takeuchi

  SPIE Optical Engineering + Applications, 19 Aug. 2018

  
• Towards advanced sensing using quantum nature of photons

  Shigeki Takeuchi

  SPIE Optical Engineering + Applications, 19 Aug. 2018, Invited

  
• ナノ光ファイバで講師を操る-光量子情報デバイスの創成

  竹内繁樹

  2018年第三回極限ナノ造形・構造物性研究会公開講演会, 30 Jul. 2018, Invited

  
• 適応量子状態推定実験の高速化の実験2

  S.Nohara; R.Okamoto; K.Yamagata; A.Fujiwara; S.Takeuchi

  QIT38, 04 Jun. 2018

  
• Correlattion between multi frequency modes of photon-pairs generated by an on-chip ring resonator

  K.Sugiura; R.Okamoto; L. Zhang; L. Kang; J. Chen; P. Wu; S T. Chu; S. Takeuchi

  QIT38, 04 Jun. 2018

  
• Dimensional Magnetic Field Control for Optically Detected Magnetic Resonance of NV Centers in Diamond

  K.Fukushige; Y.Iwabata; T.Tashima; H.Takashima; S.Takeuchi

  QIT38, 04 Jun. 2018

  
• Study on the temporal correlation measurement of entangled photon pairs

  Shigeki Takeuchi

  M.Yoshikawa, T.Deguchi, R.Okamoto, H.H Lim, S.Kurimura and S.Takeuchi, 04 Jun. 2018

  
• Serial-parallel conversion with heralded single photons

  T.Kiyohara; R.Okamoto; S.Takeuchi

  QIT38, 04 Jun. 2018

  
• 光子の偏光状態の適応量子状態推定

  S.Nohara; R.Okamoto; K.Yamagata; A.Fujiwara; S.Takeuchi

  量子生命科学研究会第2回学術集会, 10 May 2018

  
• Photonic quantum circuits and quantum metrology

  Shigeki Takeuchi

  Quantum technology creating the future!, 12 Apr. 2018, Invited

  
• Frequency correlation measurement of photon-pairs generated by an on-chip ring resonator

  K.Sugiura; R.Okamoto; L. Zhang; L. Kang; J. Chen; P. Wu; S T. Chu; S. Takeuchi

  日本物理学会2018年春季大会, 22 Mar. 2018

  
• Study on the experiment of the entanglement between two multiphoton systems 2

  N.Yamashiro; T.Kiyohara; R.Okamoto; J.Wu; H.Hofmann; S.Takeuchi

  日本物理学会2018年春季大会, 22 Mar. 2018

  
• Quantum metrology using photons-present and future-

  Shigeki Takeuchi

  日本物理学会 産総研 領域4のシンポジウム「量子テクノロジーによる計測技術の最前線」, 22 Mar. 2018, Invited

  
• Generation of frequency correlated photon-pairs using an on-chip ring resonator

  K.Sugiura; R.Okamoto; L. Zhang; L. Kang; J. Chen; P. Wu; S T. Chu; S. Takeuchi

  2018年光電子理工学国際シンポジウム, 19 Mar. 2018

  
• Serial-parallel conversion for single photons with heralding signals

  T.Kiyohara; R.Okamoto; S.Takeuchi

  2018年光電子理工学国際シンポジウム, 19 Mar. 2018

  
• Research on the efficient generation of the broadband frequency entangled photons and their applications

  Shigeki Takeuchi

  CREST領域会議 平成29年度第2回シンポジウム, 07 Dec. 2017

  
• The realization of silicon-vacancy centers in nanodiamonds

  Y.Iwabata; A.Fukuda; H.Takashima; A.Schell; H.Abe; S.Onoda; T.Oshima; S.Takeuchi

  QIT37, 16 Nov. 2017

  
• Transverse resolution improvement in quantum optical coherence tomography

  Y.Kawaguchi; K.Hayama; R.Okamoto; N.Nishizawa; S.Takeuchi

  QIT37, 16 Nov. 2017

  
• Feasibility study on the absorption measurement using destructive quantum interfarence of photon pair generation

  Y.Tokami; r.Okamoto; S.Takeuchi

  日本物理学会2017年秋季大会, 21 Sep. 2017

  
• 高屈折率コントラストﾄﾞｰﾌﾟガラスリング共振器による光子対発生

  K.Sugiura; Y.Ono; R.Okamoto; L.Zhang; L.Kang; J.Chen; P.Wu; S T.Chu; s.Takeuchi

  日本物理学会2017年秋季大会, 21 Sep. 2017

  
• Efficient quantum optical coherence tomography using polarization interferometer

  K.Hayama; S.Suezawa; Y.Kawaguchi; r.Okamoto; N.Nishizawa; S.Takeuchi

  日本物理学会2017年秋季大会, 21 Sep. 2017

  
• Fiber-coupled diamond micro-waveguides at cryogenic temperatures for efficient fluorescence collection of NV centers

  M.Fujiwara; O. Neitzke; T. Schroder; S.Takeuchi; D.Englund; O.Benson

  日本物理学会2017年秋季大会, 21 Sep. 2017

  
• The examination of direct excitation from nanofiber Bragg cavities to a nanodiamond

  T.Tashima; H.Maruya; Y.Iwabata; H.Takashima; S.Takeuchi

  日本物理学会2017年秋季大会, 21 Sep. 2017

  
• 光子を用いた量子計測とその展望

  Shigeki Takeuchi

  第35回レーザーセンシングシンポジウム, 31 Aug. 2017, Invited

  
• Adaptive quantum state estimation for dynamic quantum states

  S.Nohara; R.Okamoto; a.Fujiwara; S.Takeuchi

  The 24th Congress of the International Commission for Optics, 21 Aug. 2017

  
• Fabrication of high Q nanofiber Bragg cavity using a He ion milling system

  H.Takashima; A.Fukuda; Y.Iwabata; H.Maruya; A.Schell; S.Takeuchi

  The 24th Congress of the International Commission for Optics, 21 Aug. 2017

  
• Photonic quantum controlled-SWAP gte

  T.Ono; R.Okamoto; M.Tanida; H.F.Hofmann; S.Takeuchi

  The 24th Congress of the International Commission for Optics, 21 Aug. 2017

  
• Serial-parallel conversion for single photons with heralding signals

  T.Kiyohara; R.Okamoto; S.Takeuchi

  The 24th Congress of the International Commission for Optics, 21 Aug. 2017

  
• Broadband frequency-entangled photons for novel quantum nonlinear optics

  Shigeki Takeuchi

  The 24th Congress of the International Commission for Optics, 21 Aug. 2017, Invited

  
• One quantum shutter can close two slits simultaneously

  R. Okamoto; S. Takeuchi

  6th International Conference on New Frontiers in Physics (ICNFP2017), 21 Aug. 2017, Invited

  
• 光子を用いた量子情報科学と量子計測

  Shigeki Takeuchi

  東大物性研究所談話会, 27 Jul. 2017, Invited

  
• Quantum metrology using entangled photons

  Shigeki Takeuchi

  The first international symposium of QST-Quantum life sciences-, 25 Jul. 2017, Invited

  
• Realization of a high-Q factor nanober Bragg cavity using a He focused ion beam milling system

  H. Takashima; A. Fukuda; Y. Iwabata; H. Maruya; A. Schell; S. Takeuchi

  CLEO/EUROPE-EQEC 2017, 25 Jun. 2017

  
• Non-contact Detection of Nano-scale Structures Using Optical Nanofiber

  H. Maruya; Y. Oe; H. Takashima; A. N. Hattori; H. Tanaka; S. Takeuchi

  CLEO/EUROPE-EQEC 2017, 25 Jun. 2017

  
• One quantum shutter can close two slits simultaneously

  R. Okamoto; S. Takeuchi

  CLEO/EUROPE-EQEC 2017, 25 Jun. 2017

  
• Adaptive quantum state estimation for dynamic quantum states

  S. Nohara; R. Okamoto; A. Fujiwara; S. Takeuchi

  CLEO/EUROPE-EQEC 2017, 25 Jun. 2017

  
• "Realization of multiplexing of heralded single photon sources using cascaded on-off detectors on-oš detectors"

  T. Kiyohara; R. Okamoto; S. Takeuchi

  CLEO/EUROPE-EQEC 2017, 25 Jun. 2017

  
• 光量子計測の現状と展望

  竹内繁樹

  精密測定展2017, 07 Jun. 2017, Invited

  
• Highly efficient coupling of photons from single light emitters using nano optical fibers

  Shigeki Takeuchi

  ONNA : Optical Nanofibre Applications : From Quantum to Bio Technologies, 05 Jun. 2017, Invited

  
• Hydexリング共振器による光子対発生

  K.Sugiura; Y.Ono; R.Okamot; L.Zhang; L.Kang; J.Chen, P.Wu; S.T Chu; S. Takeuchi

  QIT36, 29 May 2017

  
• 時間的に変化する状態の適応量子状態推定

  野原紗季; 岡本亮; 藤原彰夫; 竹内繁樹

  QIT36, 29 May 2017

  
• 大強度広帯域周波数もつれ状態の実現と応用

  Shigeki Takeuchi

  CREST「量子状態の高度な制御に基づく革新的量子技術基盤の開発」公開シンポジウム, 25 May 2017, Invited

  
• Photonic quantum information and metrology : highresolution quantum optical coherence tomography and a photonic quantum circuit for CSWAP

  S.Takeuchi

  Quantum 2017, 10 May 2017, Invited

  
• ヘリウムイオン顕微鏡を用いたナノファイバブラッグ共振器の開発

  H.Takashima; A.Fukuda; Y.Iwabata; H.Maruya; A.Schell; S.Takeuchi

  ヘリウムイオン顕微鏡セミナー, 25 Apr. 2017, Invited

  
• Photonic quantum information and quantum metrology

  Shigeki Takeuchi

  The commercial + Scientific Sensing and Imaging symposium at the SPIE Defence+Commercial Sensing (formerly DCS) meeting, 12 Apr. 2017, Invited

  
• Photonic quantum information and quantum metrology

  Shigeki Takeuchi

  International Workshop on Quantum and Nanoscale Photonics, 30 Mar. 2017, Invited

  
• 時間的に変化する状態の適応量子状態推定

  S.Nohara; R.Okamoto; A.Fujiwara; S.Takeuchi

  日本物理学会 第72回年次大会（2017年）, 19 Mar. 2017

  
• 2つの多光子システム間もつれ状態の検討実験1

  N.Yamashiro; T.Kiyohara; R.Okamoto; j.Wu; H.H.Hofmann; S.Takeuchi

  日本物理学会 第72回年次大会（2017年）, 18 Mar. 2017

  
• ナノファイバブラッグ共振器の高Q値化

  A.Fukuda; H.Takashima; H.Maruya; A.Schell; S.Takeuchi

  日本物理学会 第72回年次大会（2017年）, 18 Mar. 2017

  
• 一つの量子的なシャッターで二つのスリットを同時に閉じる

  R.Okamoto; S.Takeuchi

  日本物理学会 第72回年次大会（2017年）, 17 Mar. 2017, Invited

  
• ヘリウムイオン顕微鏡を用いたナノファイバブラッグ共振器の開発

  H.Takashima; A.Fukuda; H.Maruya; Y.Iwabata; A.Schell; S.Takeuchi

  第64回応用物理学会春季学術講演会, 16 Mar. 2017

  
• ダイヤモンドナノ結晶結合ナノ光ファイバを用いた光量子デバイスの実現に向けて

  H.Takashima; Y.Iwabata; S.Fujita; M.Fujiwara; S.Takeuchi

  第64回応用物理学会春季学術講演会, 15 Mar. 2017

  
• Toward the realization of photonic quantum devices using a nanofiber Bragg cavity

  H.Takashima; A.Fukuda; A.W. Schell; M.Fujiwara; S.Takeuchi

  International Symposium on Photonics and Electronics Science and Engineering, 10 Mar. 2017, Invited

  
• Efficient extraction of photons from a single defect in hBN using a nanofiber

  A.W.Schell; T.T.Tran; I. Aharonovich; H.Takashima; S.Takeuchi

  SPIE.Photonics West 2017, 02 Feb. 2017

  
• Nonlinear excitation of single quantum emitters in hexagonal boron nitride

  A.W.Schell; T.T.Tran; I. Aharonovich; H.Takashima; S.Takeuchi

  SPIE.Photonics West 2017, 01 Feb. 2017

  
• Quantum state estimation and discrimination

  S.Takeuchi; R.Okamoto; T.Ono; K.Yamagata; A.Fujiwara; S.Hara; T.Washio

  SPIE.Photonics West 2017, 01 Feb. 2017, Invited

  
• Nanofiber bragg grating cavities

  A.W.Schell; H.Takashima; H.Maruya; A.Fukuda; S.Takeuchi

  SPIE.Photonics West 2017, 31 Jan. 2017

  
• Photonic quantum information and quantum metrology

  Shigeki Takeuchi

  2016 Workshop on Innovative Nanoscale Devices and Systems (WINDS), 06 Dec. 2016, Invited

  
• 多光子多モードもつれ状態のコヒーレンスに関する研究2

  N.Yamashiro; T.Kiyohara; R.Okamoto; j.Wu; H.H.Hofmann; S.Takeuchi

  第35回量子情報技術研究会（QIT35), 24 Nov. 2016

  
• 適応量子状態推定実験の高速化の実現

  S.Nohara; R.Okamoto; K.Yamagata; A.Fujiwara; S.Takeuchi

  第35回量子情報技術研究会（QIT35), 24 Nov. 2016

  
• Toward the realization of photonic quantum devices using an optical nanofiber

  H.Takashima; A.W.Schell; S.Fujita; A. Fukuda; Y.Oe; S.Kamioka; M.Fujiwara; S.Takuuchi

  ONNA 2016 The 4th International workshop on Optical Nanofiber Applications, 24 Oct. 2016, Invited

  
• Photonic quantum information and quantum metrology

  Shigeki Takeuchi

  The 10th International symposium on Intrinsic Josephson Effects and Plasma Oscillations in High-Tc superconductors Plasma-2016, 10 Oct. 2016, Invited

  
• Toward the realization of photonic quantum devices using a Nanofiber Bragg Cavity

  H.Takashima; A.Schell; S.Fujita; A.Fukuda; Y.Oe; S.Kamioka; M.Fujiwara; S.Takeuchi

  第77回応用物理学会秋季学術講演会, 14 Sep. 2016

  
• Toward the realization of Nano-scale Sensing Using Evanesent Light around a Tapered Optical Fibre

  H.Maruya; Y.Oe; H.Takashima; A.Hattori; H.Tanaka; S.Takeuchi

  第77回応用物理学会秋季学術講演会, 14 Sep. 2016

  
• Polarization Characteristics of Nano Fiber Bragg Cavities

  A.Fukuda; h.Takashima; A.Schell; S.Takeuchi

  日本物理学会2016年秋季大会, 13 Sep. 2016

  
• Study on the dispersion control of broadband frequency entangled photon pairs to minimize the temporal correlation

  T.Deguchi; S.Sugano; R.Okamoto; S.Takeuchi

  日本物理学会2016年秋季大会, 13 Sep. 2016

  
• Sum-frequency generation using non-collinearly generated frequency entangled photons

  S.Sugano; R.Okamoto; T.Deguchi; M.Okano; H.H.Lim; S.Kurimura; ans; S.Takeuchi

  第77回応用物理学会秋季学術講演会, 13 Sep. 2016

  
• Generation of photon pairs from quasi-phase-matched slab waveguide device

  S.Suezawa; R.Okamoto; M.Okano; H.H.Lim; S.Kurimura; S.Takeuchi

  第77回応用物理学会秋季学術講演会, 13 Sep. 2016

  
• Photonic quantum information and quantum metrology

  Shigeki Takeuchi

  Department of Physics and Materials Science Departmental Seminar, 06 Sep. 2016, Invited

  
• An excess-photon suppressed heralded single photon source combining multiple doen-converters and cascaded detectors

  T.Kiyohara; R.Okamoto; S.Takeuchi

  SPIE Optical Engineering + Applications, 28 Aug. 2016

  
• Realization of a quantum controlled-SWAP gate with photonic circuits

  S.Takeuchi; T.Ono; R.Okamoto; M.Tanida; H.F.Hofmann

  SPIE Optical Engineering + Applications, 28 Aug. 2016, Invited

  
• Realization of a quantum shutter enabling closing two slits

  R.Okamoto; S.Takeuchi

  2016 Frontiers of Nonlinear Physics, 17 Jul. 2016, Invited

  
• 量子もつれ光子を用いたイメージング

  Shigeki Takeuchi

  生物学・光源・物性研究者による量子生物額合宿勉強会, 12 Jul. 2016, Invited

  
• Application of quantum information technology for advanced sensing

  Shigeki Takeuchi

  第35回電子材料シンポジウム, 07 Jul. 2016, Invited

  
• Coupling efficiency of a single light emitter coupled to a nanofiber Bragg cavity

  H.Takashima; A.W.Schell; A.Fukuda; S.Fujita; Y.Oe; S.Kamioka; M.Fujiwara; S.Takuuchi

  CLEO 2016, 05 Jun. 2016

  
• 広帯域量子もつれ光子対の時間相関極短化の検討

  T.Deguchi; S.Sugano; R.Okamoto; S.Takeuchi

  The 34th Quantum Information Technology Symposium (QIT34), 31 May 2016

  
• テーパ光ファイバからのエバネッセント光を用いたナノスケールセンシングの実現に向けて

  H.Maruya; Y.Oe; H.Takashima; A.Hattori; H.Tanaka; S.Takeuchi

  The 34th Quantum Information Technology Symposium (QIT34), 31 May 2016

  
• 多光子多モードもつれ状態のコヒーレンスに関する研究

  N.Yamashiro; T.Kiyohara; R.Okamoto; H.H.Hofmann; S.Takeuchi

  The 34th Quantum Information Technology Symposium (QIT34), 31 May 2016

  
• 適応量子状態推定実験の高速化

  S.Nohara; R.Okamoto; K.Yamagata; A.Fujiwara; S.Takeuchi

  The 34th Quantum Information Technology Symposium (QIT34), 31 May 2016

  
• ナノファイバブラッググレーティング共振器のQ値向上に向けて

  A.Fukuda; Y.Oe; A.Schell; H.Takashima; S.Takeuchi

  The 34th Quantum Information Technology Symposium (QIT34), 31 May 2016

  
• The photon-number distribution of a heralded single photon source combining multiplexing and photon-pair number discrimination

  T.Kiyohara; R.Okamoto; S.Takeuchi

  The 34th Quantum Information Technology Symposium (QIT34), 31 May 2016

  
• Photonic quantum devices using single light emitters

  H.Takashima; A.W.Schell; A.Fukuda; S.Fujita; Y.Oe; S.Kamioka; M.Fujiwara; S.Takuuchi

  OPTICS & PHOTONICS International Congress 2016 (OPIC 2016), 18 May 2016, Invited

  
• 量子光学、量子情報、量子非線形光学などの実験的研究

  Shigeki Takeuchi

  第63回応用物理学会春季学術講演会, 19 Mar. 2016, Invited

  
• evaluation of coupling states between ring resonators and wavaguides

  Y.Ono; M.Ishino; R.Okamoto; S.Yokoyama; S.Takeuchi

  第63回応用物理学会春季学術講演会, 19 Mar. 2016

  
• A heralded single photon source combining photon-pair number discrimination and multiplexing

  T.Kiyohara; R.Okamoto; S.Takeuchi

  第63回応用物理学会春季学術講演会, 19 Mar. 2016

  
• Numerical simulation of the resonant wavelength tunability of a nanofiber Bragg cavity

  H.Takashima; A.Fukuda; Y.Oe; S.Fujita; S.Andreas; S.Takeuchi

  日本物理学会 第71回年次大会, 19 Mar. 2016

  
• 光子を用いた量子情報技術・量子計測の進展

  Shigeki Takeuchi

  ナノ量子情報エレクトロニクス成果報告シンポジウム, 29 Feb. 2016

  
• Nanofiber Bragg grating cavities for quantum optical devices

  A.Schell; H.Takashima; Y.Oe; S.Fujita; S.Takeuchi

  SPIE Photonics West, 13 Feb. 2016

  
• Realization of a quantum controlled-SWAP gate with photonic circuits

  S.Takeuchi; T.Ono; R.Okamoto; M.Tanida; H; F.Hofmann

  SPIE Photonics West, 13 Feb. 2016, Invited

  
• Coupling experiment between an optical nanofiber Bragg cavity and quantum dots

  H.Takashima; A.Schell, Y.Oe; S.Kamioka; M.Fujiwara; O.Benson; S.Takeuchi

  レーザ・量子エレクトロニクス研究会(LQE), 28 Jan. 2016

  
• Towards a fiber integrated optically detected magnetic resonance based on a single electron spin

  S.Fujita; A.Schell; H.Takashima; S.Takeuchi

  604.Wilhelm und Else Heraeus-Seminar Hybrid Systems for Quantum Optics, 11 Jan. 2016

  
• S.Takeuchi

  Shigeki Takeuchi

  光子を用いた量子計測, 19 Dec. 2015, Invited

  
• Coupling quantum dots with a nanofiber bragg cavity

  Shigeki Takeuchi

  Y.Oe, A. Schell, H.Takashima, S.Kamioka, M.Fujiwara, O.Benson and S.Takeuchi, 01 Dec. 2015

  
• A robust multiplexed single photon source with excess-photon suppression

  T.Kiyoara; R.Okamoto; S.Takeuchi

  The 4th International Workshop on Microcavities Their Applications (WOMA2015), 01 Dec. 2015

  
• Numerical Simulation of ultra-wide tunability of a nanofiber Bragg grating Cavity

  Shigeki Takeuchi

  H.Takashima, A.Schell, S.Fujita, Y.Oe and S.Takeuchi, 01 Dec. 2015

  
• Nano optical fibers with built-in microcavities for photonic quantum information

  Shigeki Takeuchi

  The 4th International Workshop on Microcavities Their Applications (WOMA2015), 01 Dec. 2015, Invited

  
• Nonlinear optical waveguide for GaN-laser pumping

  S.Kurimura; L.H.Hong; S.Takeuchi

  Advanced Solid State Lasers Conference and Exhibition, 09 Oct. 2015, Invited

  
• Study on the dispersion control of frequency entangled photon pairs to minimize temporal correlation

  S.Sugano; M.Okano; Y.Eto; R.Okamoto; S.Takeuchi

  日本物理学会2015年秋季大会, 16 Sep. 2015

  
• Optically Detected Magnetic Resonance of Diamond Nitrogen Vacancy Centers coupled to a Nano Optical Fiber

  Shigeki Takeuchi

  S.Fujita, H.Takashima, A.Schell, M.Fujiwara, N.Mizuochi and S.Takeuchi, 16 Sep. 2015

  
• Realization of 3μm-resolution quantum optical coherence tomography

  S.Suezawa; Y.Nagamatsu; M.Okano; R.Okamoto; N.Nishizawa; S.Takeuchi

  日本物理学会2015年秋季大会, 16 Sep. 2015

  
• Two-photon interference using a photon number controlled multiplexed single photon source

  T.Kiyohara; R.Okamoto; S.Takeuchi

  日本物理学会2015年秋季大会, 16 Sep. 2015

  
• FDTD analysis of photon emission from single dipole coupled to a nanofiber Bragg cavity

  S\H.Takashima; M.Fujiwara; A.Schell; S.Takeuchi

  日本物理学会2015年秋季大会, 16 Sep. 2015

  
• Parametric RGB light sources pumped by GaN laser diode

  S.Kurimura; L.H.Hong; S.Takeuchi

  応用物理学会分科内シンポジウム「窒化物半導体を用いた新機能半導体レーザの創出とその応用-レーザ発振から20年目を迎えて-, 14 Sep. 2015, Invited

  
• Adaptive quantum state estimation for a single quantum bit

  R.Okamoto; S.Oyama; K.Yamagata; A.Fujiwara; S.Takeuchi

  Quantum Information Processing and Communication (QIPC2015), 13 Sep. 2015

  
• Coupling of quantum dots with a nanofiber Bragg cavity

  H.Takashima; A.Schell, Y.Oe; S.Kamioka; M.Fujiwara; O.Benson; S.Takeuchi

  第76回応用物理学会秋季学術講演会, 13 Sep. 2015

  
• Quantum entangled photon sources and their application to quantum metrology

  Shigeki Takeuchi

  CLEO-PR 2015, 27 Aug. 2015, Invited

  
• Quantum state estimation and discrimination

  Shigeki Takeuchi

  CLEO-PR 2015, 24 Aug. 2015, Invited

  
• Numerical Simulation of an Ultra-Wide Tunability and Enhanced Spontaneous Emission of a Nanofiber Bragg Cavity

  H.Takashima; A.Schell; S.Fujita; Y.Oe; S.Kamioka; M.Fujiwara; S.Takeuchi

  CLEO-PR 2015, 24 Aug. 2015

  
• Ultra-widely tunable nanofiber bragg cavities for quantum optics

  A.Schell; H.Takashima; S.Kamioka; Y.Oe; S.Fujita; M.Fujiwara; O.Benson; S.Takeuchi

  CLEO-PR 2015, 24 Aug. 2015

  
• Application of entangled photons to optical microscopes

  Shigeki Takeuchi

  第137回微小光学研究会「微小光学からみる量子現象・量子効果」, 31 Jul. 2015, Invited

  
• Coupling quantum dots to a nanofiber bragg cavity

  Y.Oe; A. Schell; H.Takashima; S.Kamioka; M.Fujiwara; O.Benson; S.Takeuchi

  CLEO Europe-EQEC 2015, 21 Jun. 2015

  
• Towards an fiber integrated magnetometer based on a single electron spin

  S.Fujita; A.Schell; H.Takashima; M.Fujiwara; N.Mizoguchi; S.Takeuchi

  ONNA: Optical Nanofiber Applications : From Quantum to Bio Tachnologies, 25 May 2015

  
• Study on the rapid imaging of quantum optical coherence tomography

  S.Suezawa; M.Okano; R.Okamoto; N.Nishizawa; S.Takeuchi

  第32回量子情報技術m研究会（QIT32), 25 May 2015

  
• Study on minimizing the temporal correlation of broadband entangled photon pairs

  S.Sugano; M.Okano; Y.Eto; R.Okamoto; S.Takeuchi

  第32回量子情報技術m研究会（QIT32), 25 May 2015

  
• Two-photon quantum interfarence using a multiplexed single-photon source

  T.Kiyohara; R.Okamoto; S.Takeuchi

  第32回量子情報技術m研究会（QIT32), 25 May 2015

  
• Quantum metrologies using entangled photons

  Shigeki Takeuchi

  Workshop on Multi-Photon interferometry, 07 May 2015, Invited

  
• 光量子回路を用いた制御スワップゲートの実現

  小野貴史; 谷田真人; 岡本亮; H.F.Hofmann; 竹内繁樹

  日本物理学会第70回年次大会, 21 Mar. 2015

  
• 共振器内臓ナノ光ファイバと量子ドットの結合実験

  大江康子; A.Shell; 高島秀聡; 上岡俊也; 藤原正澄; O.Benson; 竹内繁樹

  日本物理学会第70回年次大会, 21 Mar. 2015

  
• Toward realization of the on-chip photon pair source in Si3N4 waveguide

  T.Sagawa; R.Okamoto; M.Okano; H.Takashima; M.Ishino; D.Qiu; S.Yokoyama; S.Takeuchi

  日本物理学会第70回年次大会, 21 Mar. 2015

  
• Quantum metrolodies using photons

  Shigeki Takeuchi

  2015年度精密工学会春季退会シンポジウム「量子光工学の現状」, 17 Mar. 2015, Invited

  
• Quantum metrolodies using photons

  Shigeki Takeuchi

  応用物理学会シンポジウム S.4フォトニクスと量子情報技術の融合へ向けて, 11 Mar. 2015, Invited

  
• Ultra-wide tuning of a nanofiber Bragg grating cavity

  H.Takashima; A.W.Schell; S.Kamioka; Y.Oe; M.Fujiwara; O.Benson; S.Takeuchi

  SPIE Photonics West 2015, 07 Feb. 2015

  
• An ultrahigh-resolution quantum optical coherence tomography with dispersion-tolerance

  S.Takeuchi; M.Okano; S.Kurimura; N.Nishizawa

  SPIE Photonics West 2015, 07 Feb. 2015, Invited

  
• Quantum metrologies using entangled photons

  Shigeki Takeuchi

  2015 IMCE International Symposium, 28 Jan. 2015, Invited

  
• ナノ光ファイバ素子とその展望

  竹内繁樹

  平成26年度 JSTさきがけ研究「場と反応」領域懇話会, 05 Dec. 2014

  
• Quantum entangled photon sources and their application to quantum metrology

  Shigeki Takeuchi

  2014 International Topical Meeting on Microwave Photonics/The 9th Asia-Pacific Microwave Photonics Conference (MWP/APMP2014), 20 Oct. 2014, Invited

  
• Ultrabroadband spontaneous parametric fluorescence in 800nm region toawrd ultrahigh-resolution quantum optical coherence tomography

  M.Okano; H.H.Lim; R.Okamoto; A.Tanaka; Y.Nagamatsu; N.Nishizawa; S.Takeuchi

  Frontiers in Optics/Laser Science (FiO/LS) 2014, 19 Oct. 2014

  
• 量子もつれ光を用いた標準量子限界を超える光位相計測技術

  岡本亮; 竹内繁樹

  2014年電子情報通信学会 ソサイエティ大会, 23 Sep. 2014, Invited

  
• "Photonic Quantum Information and Metrology "

  Shigeki Takeuchi

  Okinawa School in Physics : Coherent Quantum Dynamics, 16 Sep. 2014, Invited

  
• Narrow two-photon interference of broadband spontaneous parametric fluorescence generated from chirped PPSLT devices

  岡野真之; 岡本亮; 西澤典彦; H.H.Lim; 栗村直; 竹内繁樹

  日本物理学会2014年秋季大会, 07 Sep. 2014

  
• Photonic quantum circuits and their applications

  Shigeki Takeuchi

  The 2ND Kyoto university & National taiwan university symposium, 01 Sep. 2014, Invited

  
• 光量子情報に向けたナノフォトニクス

  竹内繁樹

  高分子・ﾊｲﾌﾞﾘｯﾄﾞ材料研究センター2014PHyMシンポジウム, 06 Jun. 2014, Invited

  
• Quantum metrologies using entangled photons

  Shigeki Takeuchi

  Quantum 2014, 25 May 2014, Invited

  
• 量子もつれ光子の計測への応用

  竹内繁樹

  ナノ量子機構シンポジウム, 19 May 2014

  
• Coupling quantum dots to a cavity-embedded nano-optical fiber

  Y.Oe; S.Kamioka; A.Shell; H.Takashima; M.Fujiwara; O.Benson; S.Takeuchi

  QIT30, 12 May 2014

  
• Realization of high-resolution quantum optical coherence tomography and demonstration of its dispersion cancellation

  Y.Nagamatsu; M.Okano; A.Tanaka; R.Okamoto; N.Nishizawa; S.Takeuchi

  第30回量子情報技術研究会（QIT）, 12 May 2014

  
• Study on Si3N4 waveguide toward optical quantum information technology

  Shigeki Takeuchi

  T.Sagawa, R.Okamoto, M.Okano, M.Ishino, S.Yokoyama and S.Takeuchi, 12 May 2014

  
• 広帯域周波数相関光子対による高分解能量子光コヒーレンストモグラフィの実証実験

  岡野真之; 永松優一; 田中陽; H.H.Lim; 岡本亮; 西澤典彦; 栗村直; 竹内繁樹

  第30回量子情報技術研究会（QIT）, 12 May 2014

  
• 光量子デバイスへの応用を目指したナノ微細加工テーパ-光ファイバの作製とその評価

  上岡俊也; 藤原正澄; 高島秀聡; 竹内繁樹

  日本物理学会第69回年次大会, 27 Mar. 2014

  
• 光子量子ビットの適応的量子状態推定

  大山悟史; 岡本亮; 小野貴史; 竹内繁樹; 山形浩一; 藤原彰夫

  日本物理学会第69回年次大会, 27 Mar. 2014

  
• 二色量子干渉による超広帯域エネルギー量子もつれ光子対検出

  田中陽; 岡本亮; H.H.Lim; 岡野真之; S.Subashchandran; 栗村直; L.Zang; L.Kang; J.Chen; P.Wu; 廣畑徹; 竹内繁樹

  基礎物理学研究所研究会 量子情報の新展開, 23 Mar. 2014

  
• Nanodiamond nitrogen vacancy centers coupled with tapered optical fibers as hybrid quantum nanophotonic devices

  M.Fujiqwara; M.Almokhtar; H.Takashima; S.Takeuchi

  78th Annual Meeting of the DPG and DPG Spring Meeting, 17 Mar. 2014

  
• Exploring strange nature of quantum physics to cultivate seeds of novel science and technologies

  Shigeki Takeuchi; Ryo Okamoto; Masazumi Fujiwara

  大阪大学未来戦略機構シンポジウム Opt OSAKA 2014 in Tokyo, 06 Mar. 2014

  
• An entanglement-enhanced microscope

  Shigeki Takeuchi

  Photonics West (SPIE), 01 Feb. 2014, Invited

  
• Experimental demonstration of An Entanglement-Enhanced Microscope

  T.Ono; R.Okamoto; S.Takeuchi

  The 17th SANKEN International Symposium, 21 Jan. 2014

  
• High-resolution quantum optical coherence tomography by broadband entangled photon pairs

  M.Okano; R.Okamoto; A.Tanaka; S.Ishida; N.Nishizawa; S.Takeuchi

  The 17th SANKEN International Symposium, 21 Jan. 2014

  
• 量子的なシャッターで複数スリットを同時に閉じる

  岡本亮; 竹内繁樹

  第3回QUATUO研究会, 11 Jan. 2014

  
• ダイヤモンドナノ結晶中の単一窒素欠陥中心を用いたナノフォトニクスデバイスの実現に向けて

  高島秀聡; 上岡俊也; 藤原正澄; 竹内繁樹

  平成25年度北大電子科学研究所研究交流会, 10 Jan. 2014

  
• Photoluminescence spectroscopy of nitrogen vacancy center in nanodiamond at cryogenic temperatures

  H.Takashima; H.Q.Zhao; M.Okano; M.Fujiwara; S.Takeuchi

  科研費量子サイバネティクス2013冬の全体会議, 16 Dec. 2013

  
• Realization of quantum cybanetics using photonic quantum circuits

  Shigeki Takeuchi

  科研費量子サイバネティクス2013冬の全体会議, 16 Dec. 2013

  
• Adaptive quantum state estimation for single quantum bit

  R.Okamoto; S.Takeuchi

  科研費量子サイバネティクス2013冬の全体会議, 16 Dec. 2013

  
• A quantum shutter closing N slits

  R.Okamoto; S. Takeuchi

  北大電子研国際シンポジウム「綱」, 11 Dec. 2013

  
• Performance evaluation of an entanglement-enhanced microscope

  T.Ono; R.Okamoto; S.Takeuchi

  FIRST「量子情報処理プロジェクト」全体会議2013, 09 Dec. 2013

  
• Photonic quantum circuits and quantum metrologies

  Shigeki Takeuchi

  Quantum Science Symposium Asia-2013, 25 Nov. 2013, Invited

  
• 高効率単一光子源への応用を目指したﾅﾉ微細加工テーパ光ﾌｧｲﾊﾞの作成

  上岡俊也; 藤原正澄; 竹内繁樹

  第29回量子情報技術研究会（QIT29), 18 Nov. 2013

  
• 量子情報データマイニング

  小野貴史; 岡本亮; 竹内繁樹; 原聡; 鷲尾隆

  第29回量子情報技術研究会（QIT29), 18 Nov. 2013

  
• 光量子情報科学の現在とその未来

  竹内繁樹

  大阪大学産業科学研究所第69回学術講演会 シンポジウム「産業科学の未来戦略」, 15 Nov. 2013

  
• 光子を用いた量子計測

  竹内繁樹

  量子ICTフォーラム・第2回会合, 23 Oct. 2013

  
• Photonic quantum circuits and quantum metrologies

  Shigeki Takeuchi

  OSA'S97th Annual meeting Frontiers in Optics 2013, 06 Oct. 2013, Invited

  
• Sum-frequency-photon generation from an entangled photon pair

  Y.Eto; M.Okano; A.Tanaka; R.Okamoto; H H.Lim; S.Kurimura; S.Takeuchi

  日本物理学界2０13年秋季大会, 25 Sep. 2013

  
• チャープPPSLT素子から発生する広帯域パラメトリック蛍光対の周波数相関測定II

  田中陽; 岡本亮; 岡野真之; S.Subashchandran; 江藤祐; L.Zang; L.Kang; J.Chen; P.Wu; 廣畑徹; H.H Lim; 栗村直; 竹内繁樹

  日本物理学界2０13年秋季大会, 25 Sep. 2013

  
• Numerical simulations on coupling of nanodiamond NV centers to tapered fibers

  M.Almokhtar; M.Fujiwara; S.Takeuchi

  Numerical simulations on coupling of nanodiamond NV centers to tapered fibers, 25 Sep. 2013

  
• Coupling diamond nitrogen vacancy centers with ultrathin optical tapered fibers at cryogenic temperatures toward efficient indistinguishable single photon sources

  Shigeki Takeuchi

  藤原正澄、趙洪泉、岡野真之、野田哲矢、池田和寛、角谷均、竹内繁樹, 25 Sep. 2013

  
• Quantum state data mining

  T.Ono; R.Okamoto; S.Takeuchi; S.Hara; T.Washio

  日本物理学界2０13年秋季大会, 25 Sep. 2013

  
• Influence of the flux of entangled photon pairs on the two-photon interference

  M.Okano; T.Yokoi; A.Tanaka; R.Okamoto; S.Takeuchi

  日本物理学界2０13年秋季大会, 25 Sep. 2013

  
• Coupling diamond nitrogen vacancy centers with ultrathin optical tapered fibers at cryogenic temperatures toward efficient indistinguishable single photon sources

  M.Fujiwara; H-Q.Zhao; M.Okano; T.Noda; K.Ikeda; H.Sumiya; S.Takeuchi

  The 2013 JSAP-MRS Joint Symposia, 16 Sep. 2013

  
• Coupling diamond nitrogen vacancy centers with ultrathin optical tapered fibers at cryogenic temperatures toward efficient indistinguishable single photon sources

  M.Fujiwara; H.Q Zhao; M.Okano; T.Noda; K.Ikeda; H.Sumiya; S.Takeuchi

  International Conference on Diamond and Carbon Materials, 02 Sep. 2013

  
• Quantum measurements and sensings

  Shigeki Takeuchi

  SPIE Optics + Photonics, 25 Aug. 2013, Invited

  
• 量子情報科学とナノフォトニクス

  竹内繁樹

  5附置間アライアンスG1分科会, 05 Aug. 2013

  
• Application of quantum metrology using photons

  T.Ono; R.Okamoto; S.Takeuchi

  22nd International Laser Physics Workshop, 19 Jul. 2013, Invited

  
• 光子量子回路による量子サイバネティクスの実現

  竹内繁樹

  第9回科研費量子サイバネティクス総括班会議, 11 Jul. 2013

  
• Diamond nitrogen vacancy centers coupled with tapered optical fibers for applications in quantum information and sensing

  M.Fujiwara; H.Q.Zhao; M.Okano; S.Takeuchi

  第9回科研費量子サイバネティクス総括班会議, 11 Jul. 2013

  
• Quantum state data mining photons

  T.Ono; R.Okamoto; S.Takeuchi

  第9回科研費量子サイバネティクス総括班会議, 11 Jul. 2013

  
• 極低温下でのダイヤモンドナノクリスタルにおけるNVセンターの超高分解能蛍光測定

  高島秀聡; 趙洪泉; 岡野真之; 藤原正澄; 竹内繁樹

  第9回科研費量子サイバネティクス総括班会議, 11 Jul. 2013

  
• Photoluminescence measurement of zero-phonon line from NV center in diamond nanocrystals at cryogenic temperatures

  H.Takashima; H.Q.Zhao; M.Okano; M.Fujiwara; S.Takeuchi

  New science and technologies using entangled photons (NSTEP), 08 Jul. 2013

  
• "Direct Observation of 150 THz-Frequency Correlation of Photon Pairs Generated from Chirped Quasi-Phase Matched Crystal Pairs Generated from Chirped Quasi-Phase Matched Crystal"

  A.Tanaka; R.Okamoto; H H.Lim; S.Subashchandran; M.Okano; Y.Eto; L.Zhang; L.Chen, P.Wu; T. Hirohata; S.Kurimura; S.Takeuchi

  New science and technologies using entangled photons (NSTEP), 08 Jul. 2013

  
• Toward the realization of monocycle entangled photons

  Shigeki Takeuchi

  New science and technologies using entangled photons (NSTEP), 08 Jul. 2013, Invited

  
• High resolution quantum optical coherence tomography by broadband entangled photon pairs

  M.Okano; R.Okamoto; A.Tanaka; S.Ishida; N.Nishizawa; S.Takeuchi

  New science and technologies using entangled photons (NSTEP), 08 Jul. 2013, Invited

  
• Coupling diamond nitrogen vacancy centers with optical tapered fibers for single photon sources

  M.Fujiwara; H Q.Zhao; M.Okano; T.Noda; S.Takeuchi

  New science and technologies using entangled photons (NSTEP), 08 Jul. 2013

  
• Adaptive quantum state estimation of mixed states using photons

  S.Oyama; M.Iefuji; R.Okamoto; K.Yamagata; A.Fujiwara; S.Takeuchi

  New science and technologies using entangled photons (NSTEP), 08 Jul. 2013

  
• The effect of diamond nanocrystal structures on the coupling of single nitrogen vacancy centers with tapered nanofibers

  M.Almokhtar; M.Fujiwara; S.Takeuchi

  New science and technologies using entangled photons (NSTEP), 08 Jul. 2013

  
• Sum-frequency-photon generation from an entangled photon pair

  Y.Eto; M.Okano; A.Tanaka; R.Okamoto; H H.Lim; S.Kurimura; S.Takeuchi

  New science and technologies using entangled photons (NSTEP), 08 Jul. 2013

  
• Experimental demonstration of an entanglement-enhanced microscope

  T.Ono; R.Okamoto; S.Takeuchi

  New science and technologies using entangled photons (NSTEP), 08 Jul. 2013

  
• Fabrication of nanostructured tapered fibers for highly efficient single photon sources

  S.Kamioka; M.Fujiwara; S.Takeuchi

  New science and technologies using entangled photons (NSTEP), 08 Jul. 2013

  
• Coupling diamond nitrogen vacancy centers to tapered fibers: Toward generation of indistinguishable single photons

  M.Fujiwara; T.Schroder; H.Q Zhao; T.Noda; S.Kamioka; O Benson; S.Takeuchi

  CLEO-PR & OECC/PS 2013, 30 Jun. 2013

  
• Broadband Frequency Correlated Photon Pairs Using a Chirped-QPM Device

  A.Tanaka; R.Okamoto; H.H.Lim; S.Subashchandran; M.Okano; L.zang; L.Kang; J.Chen, P.Wu; T.Hirohata; S.Kurimura; S.Takeuchi

  CLEO-PR & OECC/PS 2013, 30 Jun. 2013

  
• High-resolution quantum optical coherence tomography by broadband parametric fluorescence

  M.Okano; R.Okamoto; A.Tanaka; S.Ishida; N.Nishizawa; S.Takeuchi

  High-resolution quantum optical coherence tomography by broadband parametric fluorescence, 30 Jun. 2013

  
• Dispersion-tolerant quantum optical coherence tomography by broadband parametric fluorescence

  M.Okano; R.Okamoto; A.Tanaka; S.Ishida; N.Nishizawa; S.Takeuchi

  The 21st International Conference on Laser Spectroscopy (ICOLS2013), 09 Jun. 2013

  
• Nano optical fibers for photonic quantum information

  Shigeki Takeuchi

  Optical Nanofiber Applications: From Quantum to Bio Technologies ONNA 2013, 01 Jun. 2013, Invited

  
• Realization and Observation of Ultra-Broadband Frequency Correlated Photon Pairs at Near-Infrared Wavelength Range

  田中陽; 岡本亮; H.H.Lim; 岡野真之; 江藤祐; S.Subashchandran; 栗村直; L.Zang; L.Kang; J.Chen; P.Wu; 廣畑徹; 竹内繁樹

  第28回量子情報技術研究会（QIT28), 27 May 2013

  
• The effect of diamond nanocrystal structures to the coupling of single nitrogen vacancy centers with tapered nanofibers

  M.Almokhtar; M.Fujiwara; S.Takeuchi

  第28回量子情報技術研究会（QIT28), 27 May 2013

  
• Optical quantum metrology and its applications

  T.Ono; S.Hara; T.Washio; R.Okamoto; S.Takeuchi

  平成24年度アライアンス成果報告会, 23 Apr. 2013

  
• Photonic quantum circuits and single photon sources

  Shigeki Takeuchi

  The 11th US-Japan Joint Seminar on Quantum Electronics and Laser Spectroscopy "Ultimate Quantum Systems of Light and Matter-Control and Applications", 04 Apr. 2013, Invited

  
• 量子光コヒーレンストモグラフィがよせる分極反転デバイスへの期待

  M.Okano; N.Nishizawa; S.Kurimura; S.Takeuchi

  2013年第60回応用物理学会春季学術講演会, 27 Mar. 2013, Invited

  
• Ultra-high resolution PL measurement of temperature-dependent inhomogeneous broadening of zero-phonon line from NV-center in nanodiamond at cryogenic temperatures

  H.Q.Zhao; M.Fujiwara; M.Okano; S.Takeuchi

  日本物理学会第68回年次大会, 26 Mar. 2013

  
• Highly efficient collection of Photons emitted from Quantum Light Emitters using an Optical Nanofiber

  H.Takashima; A.Fukuda; Y.Iwabata; H.Maruya; Y.Iwabata; A.Schell; M.Fujiwara; S.Takeuchi

  The first international symposium of QST-Quantum life sciences-

  
• 窒化シリコンリング共振器を用いた多光子生成

  D.Nakamura; K.Sugiura; R.Okamoto; Q Feng; S.Yokoyama; S.Takeuchi

  2022年第69回応用物理学会春季学術講演会, 22 Mar. 2022

  
• Investigation of spestral properties of photon-pairs generated in an on-chip ring resonator

  K.Sugiura; R.Okamoto; S.T.Chu; B.E.Little; S.Sugiura

  International Symposia on Creation of Advanced Photonic and Electronic Devices 2022 and Advanced Quantum Technology for Future 2022, 08 Mar. 2022

  
• Comparison of CW and pulsed laser excitation in Infared quantum absorption spectroscopy

  J.Kaur; Y.Mukai; R.Okamoto; S.Takeuchi

  International Symposia on Creation of Advanced Photonic and Electronic Devices 2022 and Advanced Quantum Technology for Future 2022, 08 Mar. 2022

  
• Creation of Silicon Vacancy Center in Detonation Nanodiamonds by High Temperature Annealing

  K.Shimazaki; H.Kawaguchi; H.Takashima; T.F.Segawa; F.T.-K.So; D.Terada; S.Onoda; T.Ohshima; M.Shirakawa; S.Takeuchi

  International Symposia on Creation of Advanced Photonic and Electronic Devices 2022 and Advanced Quantum Technology for Future 2022, 08 Mar. 2022

  
• Direct observation of quantum interference in non-Fock states using Fourier transform of optical quantum circuit

  G.Park; R.Okamoto; H F.Hofmann; S.Takeuchi

  International Symposia on Creation of Advanced Photonic and Electronic Devices 2022 and Advanced Quantum Technology for Future 2022, 08 Mar. 2022

  
• Wavelength-tunable broadband infrared quantum absorption spectroscopy in the mid-infrared region 2-5μm

  M.Arahata; Y.Mukai; T.Tashima; R.Okamoto; S.Takeuchi

  International Symposia on Creation of Advanced Photonic and Electronic Devices 2022 and Advanced Quantum Technology for Future 2022, 08 Mar. 2022

  
• 光量子センシングの現状と展望

  竹内 繁樹

  「光の日」シンポジウム「光エレクトロニクスによる量子技術イノベーション」, 08 Mar. 2022, Invited

  
• Efficient generation and evaluation of single photons propagating in the multiple optical modes

  S.Takeuchi

  Photonics West 2022 On Demand, 27 Feb. 2022, Invited

  
• 光量子センシングのしくみ、その現状と展望

  竹内 繁樹

  量子計測・センシング基礎講座 第三回光量子センシングの基礎, 12 Jan. 2022, Invited

  
• 光量子センシングの現状と展望

  竹内 繁樹

  電気学会パワー光源および新規応用技術動向調査専門委員会, 29 Oct. 2021, Invited