顔写真

PHOTO

Kazuhisa Ogawa
小川 和久
Kazuhisa Ogawa
小川 和久
Center for Quantum Information and Quantum Biology，Associate Professor

keyword Quantum computer，Quantum Information，Optical Measurements，Quantum Optics，Quantum Electronics

Research History 4

  1. 2024/04 - Present
    Osaka University　Center for Quantum Information and Quantum Biology (QIQB)　Associate Professor

  2. 2022/04 - 2024/03
    Osaka University　Center for Quantum Information and Quantum Biology　Lecturer

  3. 2021/04 - 2022/03
    Osaka University　Center for Quantum Information and Quantum Biology　Specially appointed associate professor

  4. 2015/10 - 2021/03
    Hokkaido University　Graduate School of Information Science and Technology　Assistant Professor

Education 3

  1. Kyoto University　Graduate School of Engineering　Ph.D.

    2013/04 - 2015/09

  2. Kyoto University　Graduate School of Engineering　M.S.

    2011/04 - 2013/03

  3. Kyoto University　Faculty of Engineering　B.S.

    2006/04 - 2011/03

Professional Memberships 2

  1. THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS

  2. THE PHYSICAL SOCIETY OF JAPAN

Research Areas 3

  1. Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Electronic devices and equipment /

  2. Nanotechnology/Materials / Optical engineering and photonics /

  3. Natural sciences / Semiconductors, optical and atomic physics /

Papers 47

  1. Optimizing multi-tone microwave pulses via phase selection for quantum computing applications

    R. Ohira, R. Matsuda, H. Shiomi, K. Ogawa, M. Negoro

    Journal of Applied Physics　Vol. 136　No. 11　2024/09/20　Research paper (scientific journal)

    Publisher: AIP Publishing

  2. Square-Wave Defined Pulse Generator for High Fidelity Gate Operation of Superconducting Qubits

    Ryosuke Matsuo, Kazuhisa Ogawa, Hidehisa Shiomi, Makoto Negoro, Ryutaro Ohira, Takefumi Miyoshi, Michihiro Shintani, Hiromitsu Awano, Takashi Sato, Jun Shiomi

    2024 IEEE International Conference on Quantum Computing and Engineering (QCE)　p. 378-379　2024/09/15　Research paper (international conference proceedings)

    Publisher: IEEE

  3. A unified view of direct measurement of quantum states, processes, and measurements

    Kazuhisa Ogawa, Takumi Matsuura, Akihisa Tomita

    2024/03/27

  4. Looking Around Quantum Measurement Through Time Reversal

    Hirokazu KOBAYASHI, Kazuhisa OGAWA

    The Review of Laser Engineering　Vol. 52　No. 3　p. 132-136　2024/03　Research paper (scientific journal)

  5. Reduction of the two-photon temporal distinguishability for measurement-device-independent quantum key distribution

    Haobo Ge, Akihisa Tomita, Atsushi Okamoto, Kazuhisa Ogawa

    Optics Letters　Vol. 49　No. 4　p. 822-822　2024/02/05　Research paper (scientific journal)

    Publisher: Optica Publishing Group

  6. SPulseGen: Succinct pulse generator architecture maximizing gate fidelity for superconducting quantum computers

    Ryosuke Matsuo, Kazuhisa Ogawa, Hidehisa Shiomi, Makoto Negoro, Takefumi Miyoshi, Michihiro Shintani, Hiromitsu Awano, Takashi Sato, Jun Shiomi

    2023/12/14

  7. Analysis of the Effects of the Two-Photon Temporal Distinguishability on Measurement-Device-Independent Quantum Key Distribution

    Haobo Ge, Akihisa Tomita, Atsushi Okamoto, Kazuhisa Ogawa

    IEEE Transactions on Quantum Engineering　Vol. 4　p. 1-8　2023　Research paper (scientific journal)

    Publisher: Institute of Electrical and Electronics Engineers (IEEE)

  8. Complex counterpart of variance in quantum measurements for pre-and postselected systems

    Kazuhisa Ogawa, Natsuki Abe, Hirokazu Kobayashi, Akihisa Tomita

    Physical Review Research　Vol. 3　2021/07　Research paper (scientific journal)

  9. Direct measurement of ultrafast temporal wavefunctions

    Kazuhisa Ogawa, Takumi Okazaki, Hirokazu Kobayashi, Toshihiro Nakanishi, Akihisa Tomita

    Optics Express　Vol. 29　No. 13　p. 19403-19403　2021/06/21　Research paper (scientific journal)

    Publisher: The Optical Society

  10. Spatial mode exchange technique using volume holograms with a random optical diffuser for reduction of crosstalk

    Shuanglu Zhang, Atsushi Okamoto, Taijun Shiba, Hotaka Hayashi, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Yuta Goto, Naoya Wada

    OPTICAL REVIEW　Vol. 28　No. 2　p. 181-189　2021/04　Research paper (scientific journal)

  11. State preparation robust to modulation signal degradation by use of a dual parallel modulator for high-speed BB84 quantum key distribution systems

    Weiyang Zhang, Yu Kadosawa, Akihisa Tomita, Kazuhisa Ogawa, Atsushi Okamoto

    Optics Express　Vol. 28　No. 9　p. 13965-13965　2020/04/27　Research paper (scientific journal)

  12. Operational formulation of weak values without probe systems

    Kazuhisa Ogawa, Hirokazu Kobayashi, Akihisa Tomita

    Physical Review A　Vol. 101　No. 4　2020/04/17　Research paper (scientific journal)

    Publisher: American Physical Society (APS)

  13. Mode-selective switch for ROADM using volume holograms and spatial light modulator

    Hotaka Hayashi, Atsushi Okamoto, Tomohiro Maeda, Taijun Shiba, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Yuta Goto, Naoya Wada

    Next-Generation Optical Communication: Components, Sub-Systems, and Systems IX　2020/01/31　Research paper (international conference proceedings)

    Publisher: SPIE

  14. Spatial mode exchange technique using volume holograms with a random optical diffuser to reduce modal cross-talks

    Zhang Shuanglu, Atsushi Okamoto, Taijun Shiba, Hotaka Hayashi, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Yuta Goto, Naoya Wada

    Next-Generation Optical Communication: Components, Sub-Systems, and Systems IX　2020/01/31　Research paper (international conference proceedings)

    Publisher: SPIE

  15. Three-dimensional tomographic imaging and quantitative phase measurement using virtual phase conjugation

    Satoshi Kawashima, Atsushi Okamoto, Tomohiro Maeda, Kazuhisa Ogawa, Akihisa Tomita, Ryusuke Osaki, Naoki Hayashi

    Progress in Biomedical Optics and Imaging - Proceedings of SPIE　Vol. 11245　2020　Research paper (international conference proceedings)

    Publisher: SPIE

  16. Collective measurement of DMD in 6-mode 19-core fiber using low-coherence digital holography

    Yuta Abe, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita, Daiki Soma, Yuta Wakayama, Takehiro Tsuritani

    Proceedings of SPIE - The International Society for Optical Engineering　Vol. 11309　2020　Research paper (international conference proceedings)

    Publisher: SPIE

  17. Wavefront superposition method for accurate and efficient mode conversion

    Tomohiro Maeda, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita

    Applied Optics　Vol. 58　No. 25　p. 6899-6905　2019/08　Research paper (scientific journal)

  18. Highly Accurate Mode Conversion Using Iterative Spatial Cross Modulation.

    Kazuhisa OgawaMaeda, T, Okamoto, A, Ogawa, K, Tomita, A, Wakayama, Y, Tsuritani, T

    2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC)　p. 1-3　2019/07　Research paper (international conference proceedings)

  19. A framework for measuring weak values without weak interactions and its diagrammatic representation

    Kazuhisa Ogawa, Osamu Yasuhiko, Hirokazu Kobayashi, Toshihiro Nakanishi, Akihisa Tomita

    New Journal of Physics　Vol. 21　No. 4　2019/04　Research paper (scientific journal)

    Publisher: {IOP} Publishing

  20. Diagrammatic representation of direct measurement systems of quantum states, processes, and measurements

    Kazuhisa Ogawa, Hirokazu Kobayashi, Akihisa Tomita

    Optics InfoBase Conference Papers　Vol. 2019　2019　Research paper (international conference proceedings)

    Publisher: OSA - The Optical Society

  21. Mode conversion based on dual-phase modulation utilizing interference of two-phase-modulated beams

    Tomohiro Maeda, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita, Yuta Wakayama, Takehiro Tsuritani

    Optical Review　Vol. 25　No. 6　p. 734-742　2018/10　Research paper (scientific journal)

  22. Experimental implementation of multiplexing/demultiplexing in digital images using virtual phase conjugation for holographic data storage

    Yuta Goto, Atsushi Okamoto, Masanori Takabayashi, Kazuhisa Ogawa, Akihisa Tomita

    Optical Review　Vol. 25　No. 5　p. 549-554　2018/10　Research paper (scientific journal)

  23. Classical reconstruction of interference patterns of position-wave-vector-entangled photon pairs by the time-reversal method

    Kazuhisa Ogawa, Hirokazu Kobayashi, Akihisa Tomita

    Physical Review A　Vol. 97　No. 2　2018/02/13　Research paper (scientific journal)

    Publisher: American Physical Society

  24. Virtual phase conjugation based optical tomography for single-shot three-dimensional imaging

    Yuta Goto, Atsushi Okamoto, Atsushi Shibukawa, Kazuhisa Ogawa, Akihisa Tomita

    Optics Express　Vol. 26　No. 4　p. 3779-3790　2018/02　Research paper (scientific journal)

  25. Volume holographic spatial mode demultiplexer with a dual-wavelength method

    Shimpei Shimizu, Atsushi Okamoto, Fumiya Mizukawa, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Naoya Wada

    Applied Optics　Vol. 57　No. 2　p. 146-153　2018/01/10　Research paper (scientific journal)

    Publisher: OSA - The Optical Society

  26. Fundamental demonstration of mode-group demultiplexing technique based on volume holographic demultiplexer

    Shimpei Shimizu, Atsushi Okamoto, Fumiya Mizukawa, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Naoya Wada

    22nd Microoptics Conference, MOC 2017　Vol. 2017-　p. 260-261　2018/01/02　Research paper (international conference proceedings)

    Publisher: Institute of Electrical and Electronics Engineers Inc.

  27. Compensation of optical aberration for improvement of image quality in virtual-phase-conjugation based optical tomography

    Yuta Goto, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita

    22nd Microoptics Conference, MOC 2017　Vol. 2017-　p. 358-359　2018/01/02　Research paper (international conference proceedings)

    Publisher: Institute of Electrical and Electronics Engineers Inc.

  28. Selective mode conversion using dual-phase modulation

    Tomohiro Maeda, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita, Yuta Wakayama, Takehiro Tsuritani

    22nd Microoptics Conference, MOC 2017　Vol. 2017-　p. 68-69　2018/01/02　Research paper (international conference proceedings)

    Publisher: Institute of Electrical and Electronics Engineers Inc.

  29. Measurement of differential mode delay using reference-free low-coherence digital holography

    Shogo Hoshino, Atsushi Okamoto, Yuta Goto, Kazuhisa Ogawa, Akihisa Tomita, Yuta Wakayama, Takehiro Tsuritani

    Proceedings of SPIE - The International Society for Optical Engineering　Vol. 10561　2018　Research paper (international conference proceedings)

    Publisher: SPIE

  30. Selective spatial mode attenuator using phase-intensity-phase modulation toward mode-division multiplexing transmission

    Zihan Zhou, Atsushi Okamoto, Shimpei Shimizu, Akihisa Tomita, Kazuhisa Ogawa, Yuta Wakayama, Takehiro Tsuritani

    Proceedings of SPIE - The International Society for Optical Engineering　Vol. 10561　2018　Research paper (international conference proceedings)

    Publisher: SPIE

  31. Spatial mode demultiplexing technique using angularly multiplexed volume holograms with a phase plate

    Shimpei Shimizu, Atsushi Okamoto, Fumiya Mizukawa, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Naoya Wada

    Japanese Journal of Applied Physics　Vol. 56　No. 9S　p. 09NA05-1-09NA05-5　2017/08　Research paper (scientific journal)

    Publisher: Institute of Physics

  32. Digital image multiplexing/demultiplexing method using spatial spectral diffusion and virtual phase conjugation technique for reduction of dynamic range consumption in holographic medium

    Yuta Goto, Atsushi Okamoto, Masanori Takabayashi, Kazuhisa Ogawa, Akihisa Tomita

    Japanese Journal of Applied Physics　Vol. 56　No. 9S　p. 09NA07-1-09NA07-8　2017/08　Research paper (scientific journal)

  33. Intensity fluctuation of a gain-switched semiconductor laser for quantum key distribution systems

    Kensuke Nakata, Akihisa Tomita, Mikio Fujiwara, Ken-ichiro Yoshino, Akio Tajima, Atsushi Okamoto, Kazuhisa Ogawa

    OPTICS EXPRESS　Vol. 25　No. 2　p. 622-634　2017/01　Research paper (scientific journal)

  34. Reference-free holographic diversity interferometry via iterative measurements for high accuracy phase detection

    Yuta Goto, Atsushi Okamoto, Yuta Wakayama, Kazuhisa Ogawa, Jin Nozawa, Akihisa Tomita, Takehiro Tsuritani

    OPTICS EXPRESS　Vol. 24　No. 21　p. 24739-24749　2016/10　Research paper (scientific journal)

  35. Virtual interferogram-generation algorithm for robust complex amplitude measurement using two interferograms

    Jin Nozawa, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita

    OPTICS EXPRESS　Vol. 24　No. 21　p. 24002-24017　2016/10　Research paper (scientific journal)

  36. Digital confocal microscopy using a virtual 4f-system based on numerical beam propagation for depth measurement without mechanical scanning

    Yuta Goto, Atsushi Okamoto, Masataka Toda, Yasuyuki Kuno, Jin Nozawa, Kazuhisa Ogawa, Akihisa Tomita

    JAPANESE JOURNAL OF APPLIED PHYSICS　Vol. 55　No. 8　2016/08　Research paper (scientific journal)

  37. Classical realization of dispersion-canceled, artifact-free, and background-free optical coherence tomography

    Kazuhisa Ogawa, Masao Kitano

    Optics Express　Vol. 24　No. 8　2016/04/18　Research paper (scientific journal)

    Publisher: OSA - The Optical Society

  38. 21pBJ-3 Classical realization of dispersion-cancelled optical coherence tomography with time-reversal symmetry of quantum mechanics

    Ogawa K., Kitano M.

    Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 745-745　2016

    Publisher: The Physical Society of Japan (JPS)

  39. Optical Interferometric Measurements Inspired by Time-Reversal Symmetry of Quantum Mechanics

    Kazuhisa Ogawa

    Kyoto University　2015/09　Doctoral thesis

  40. Observation of nonlinear variations in a three-vertex geometric phase in a two-photon polarization qutrit

    Kazuhisa Ogawa, Shuhei Tamate, Hirokazu Kobayashi, Toshihiro Nakanishi, Masao Kitano

    PHYSICAL REVIEW A　Vol. 91　No. 6　2015/06　Research paper (scientific journal)

  41. Classical realization of dispersion cancellation by time-reversal method

    Kazuhisa Ogawa, Shuhei Tamate, Toshihiro Nakanishi, Hirokazu Kobayashi, Masao Kitano

    PHYSICAL REVIEW A　Vol. 91　No. 1　2015/01　Research paper (scientific journal)

  42. Classical realization of dispersion cancellation by using transform-limited pulses

    Kazuhisa Ogawa, Shuhei Tamate, Toshihiro Nakanishi, Hirokazu Kobayashi, Masao Kitano

    Optics InfoBase Conference Papers　2014　Research paper (international conference proceedings)

    Publisher: Optical Society of American (OSA)

  43. Classical Realization of Dispersion Cancellation by Using Transform-limited Pulses

    Kazuhisa Ogawa, Shuhei Tamate, Toshihiro Nakanishi, Hirokazu Kobayashi, Masao Kitano

    2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2014　Research paper (international conference proceedings)

  44. Time-reversed two-photon interferometry for phase superresolution

    Kazuhisa Ogawa, Shuhei Tamate, Hirokazu Kobayashi, Toshihiro Nakanishi, Masao Kitano

    PHYSICAL REVIEW A　Vol. 88　No. 6　2013/12　Research paper (scientific journal)

  45. Bloch-sphere representation of three-vertex geometric phases

    Shuhei Tamate, Kazuhisa Ogawa, Masao Kitano

    Physical Review A - Atomic, Molecular, and Optical Physics　Vol. 84　No. 5　2011/11/21　Research paper (scientific journal)

  46. Bloch-sphere representation of three-vertex geometric phases

    Shuhei Tamate, Kazuhisa Ogawa, Masao Kitano

    PHYSICAL REVIEW A　Vol. 84　No. 5　2011/11　Research paper (scientific journal)

  47. 22pEB-2 幾何学的位相のマヨラナ表現(22pEB 量子エレクトロニクス(量子測定・量子エレクトロニクス・分光),領域1(原子・分子,量子エレクトロニクス,放射線物理))

    小川 和久, 玉手 修平, 小林 弘和, 北野 正雄

    日本物理学会講演概要集,66 (2), p. 150　2011/01　Research paper (scientific journal)

Misc. 26

  1. 化学のための量子コンピュータ入門 (第2回) 量子ビットの物理的イメージ

    小川 和久

    現代化学　Vol. 638　p. 26-30　2024/05　Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)

  2. Relationship Between Detector Accuracy and Measurement Quality in Super-resolution Complex Amplitude Measurements Using Virtual Phase Conjugation

    IMAI Ryoya, OKAMOTO Atsushi, KAWASHIMA Satoshi, OGAWA Kazuhisa, TOMITA Akihisa

    Technical Digest of International Conference on Optics-photonics Design & Fabrication　Vol. 12th (CD-ROM)　2021

  3. Improvement of Diffraction Efficiency of Mode Demultiplexer Using Volume Hologram at 1550nm

    Vol. 119　No. 231　p. 105-108　2019/10/17

    Publisher: 電子情報通信学会

  4. Improvement of Diffraction Efficiency of Mode Demultiplexer Using Volume Hologram at 1550nm

    Vol. 119　No. 230　p. 105-108　2019/10/17

    Publisher: 電子情報通信学会

  5. Improvement of noise separation accuracy in image reconstruction in virtual phase conjugation based optical tomography

    Vol. 118　No. 449　p. 71-74　2019/02/19

    Publisher: 電子情報通信学会

  6. Improvement of noise separation accuracy in image reconstruction in virtual phase conjugation based optical tomography

    Vol. 43　No. 5　p. 71-74　2019/02

    Publisher: 映像情報メディア学会

  7. Reduction of holographic scattering in volume holographic mode de-multiplexer for improvement of diffraction efficiency

    柴泰純, 岡本淳, 岡本淳, 林穂高, 小川和久, 富田章久, 高畠武敏, 高畠武敏, 後藤優太, 品田聡, 和田尚也

    光通信システムシンポジウムプログラム&講演予稿集(CD-ROM)　Vol. 33rd　2019

  8. 空間クロスモジュレーションを用いた超解像画像投影手法

    LU Yiwo, 岡本淳, 舟越久敏, 小川和久, 富田章久

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)　Vol. 80th　2019

  9. Experiment on digital image multiplexing/demultiplexing using virtual phase conjugation for high density holographic memory

    Vol. 117　No. 432　p. 261-265　2018/02/15

    Publisher: 電子情報通信学会

  10. Experiment on digital image multiplexing/demultiplexing using virtual phase conjugation for high density holographic memory

    Vol. 117　No. 431　p. 261-265　2018/02/15

    Publisher: 電子情報通信学会

  11. Experiment on digital image multiplexing/demultiplexing using virtual phase conjugation for high density holographic memory

    Vol. 42　No. 4　p. 261-265　2018/02

    Publisher: 映像情報メディア学会

  12. Experiment on selective mode conversion using dual-phase modulation

    Vol. 117　No. 196　p. 51-55　2017/08/31

    Publisher: 電子情報通信学会

  13. Separation Characteristics of Volume Holographic Spatial Mode Demultiplexer at 850 nm Wavelength

    Vol. 117　No. 196　p. 45-50　2017/08/31

    Publisher: 電子情報通信学会

  14. Experiment on Spatial Mode Separation and Conversion Technique Using Volume Hologram

    Vol. 116　No. 464　p. 157-161　2017/02/20

    Publisher: 電子情報通信学会

  15. Experiment on Virtual Shift Method for Alignment Error Reduction of Holographic Diversity Interferometry

    Vol. 116　No. 464　p. 153-156　2017/02/20

    Publisher: 電子情報通信学会

  16. Characterization of multiplexing technique using virtual phase conjugation for high density holographic memory

    Vol. 116　No. 463　p. 147-152　2017/02/20

    Publisher: 電子情報通信学会

  17. Experiment on Dual-Wavelength Method toward Spatial Mode De-Multiplexing with Volume Hologram in Optical Communication Wavelength Band

    Vol. 116　No. 463　p. 163-168　2017/02/20

    Publisher: 電子情報通信学会

  18. Experiment on Dual-Wavelength Method toward Spatial Mode De-Multiplexing with Volume Hologram in Optical Communication Wavelength Band

    Vol. 41　No. 5　p. 163-168　2017/02

    Publisher: 映像情報メディア学会

  19. Experiment on Virtual Shift Method for Alignment Error Reduction of Holographic Diversity Interferometry

    Vol. 41　No. 5　p. 153-156　2017/02

    Publisher: 映像情報メディア学会

  20. Experiment on Spatial Mode Separation and Conversion Technique Using Volume Hologram

    Vol. 41　No. 5　p. 157-161　2017/02

    Publisher: 映像情報メディア学会

  21. Characterization of multiplexing technique using virtual phase conjugation for high density holographic memory

    Vol. 41　No. 5　p. 147-152　2017/02

    Publisher: 映像情報メディア学会

  22. Virtual interferogram-generation algorithm for high-accurate phase measurement using only two holograms

    Vol. 115　No. 458　p. 303-307　2016/02/22

    Publisher: 電子情報通信学会

  23. Virtual interferogram-generation algorithm for high-accurate phase measurement using only two holograms

    Vol. 40　No. 6　p. 303-307　2016/02

    Publisher: 映像情報メディア学会

  24. Bennett1992の盗聴量解析

    中村敏幸, 中田賢佑, 小川和久, 岡本淳, 富田章久

    応用物理学会春季学術講演会講演予稿集(CD-ROM)　Vol. 63rd　2016

  25. 28aCC-12 Time-reversed dispersion cancellation by using transform-limited pulses

    Ogawa K., Tamate S., Nakanishi T., Kobayashi H., Kitano M.

    Meeting abstracts of the Physical Society of Japan　Vol. 69　No. 1　p. 186-186　2014/03/05

    Publisher: The Physical Society of Japan (JPS)

  26. 19aAK-7 Observation of Geometric Phases in Three-state Quantum System

    Ogawa K., Tamate S., Kobayashi H., Kitano M.

    Meeting abstracts of the Physical Society of Japan　Vol. 67　No. 2　p. 140-140　2012/08/24

    Publisher: The Physical Society of Japan (JPS)

Presentations 56

  1. 1. Development of Superconducting Quantum Computer at QIQB, The University of Osaka

    Kazuhisa Ogawa

    International Symposium on Advanced Quantum Hardware　2025/05/21

  2. Improving the yield of frequency-fixed superconducting qubit systems using siZZle-CZ gates

    Kazuhisa Ogawa, Yutaka Tabuchi, Makoto Negoro

    APS Global Physics Summit 2025　2025/03/20

  3. siZZle-CZゲートを用いた周波数固定型超伝導qubitシステムの高歩留集積設計

    小川 和久

    第11回QUATUO研究会　2025/01/11

  4. Role of Microwave Technology in Superconducting Quantum Computers

    Kazuhisa Ogawa

    MWE2024　2024/11/27

  5. Development of Superconducting Quantum Computer at QIQB, Osaka University

    Kazuhisa Ogawa

    MNC2024　2024/11/14

  6. Development of superconducting quantum computer at QIQB, Osaka University

    Kazuhisa Ogawa

    Quantum Innovation 2024　2024/10/23

  7. Development of Superconducting Quantum Computer at. QIQB, Osaka University

    Kazuhisa Ogawa

    Quantum software, middleware, and controller for near-term quantum computing systems　2024/10/17

  8. Performance evaluation of the siZZle-CZ gate as two-qubit gates in frequency-fixed superconducting integrated qubit chips

    Kazuhisa OGAWA, Yutaka TABUCHI, Makoto NEGORO

    The 50th Quantum Information Technology Symposium (QIT50)　2024/05/29

  9. 超伝導量子コンピュータにおける 常在ZZ相互作用による2qubitゲート

    小川 和久

    第10回QUATUO研究会　2024/01/06

  10. Feasibility of superconducting quantum computation using two-qubit gates with static ZZ interaction

    Kazuhisa Ogawa

    QUANTUM INNOVATION 2023　2023/11/16

  11. 大阪大学QIQBにおける超伝導量子コンピュータ開発

    小川 和久

    第25回理論化学討論会　2023/05/17

  12. Development of Superconducting Quantum Computer in QIQB, Osaka

    Kazuhisa Ogawa

    Technical Committee on Antennas and Propagation (AP)　2023/04/14

  13. クロスエントロピー最小化による量子ビット系のハミルトニアン推定

    守内一馬, 御手洗光祐, 小川和久, 松田亮, 森榮真一, 小池恵介, 塩見英久, 三好健文, 玉手修平, 田渕豊, Yung Szen Yap, 根来誠, 中村泰信, 藤井啓祐

    日本物理学会2023年春季大会　2023/03/22

  14. Superconducting qubit control with a system of an integrated microwave board and FPGA

    Makoto Negoro, Kazuhisa Ogawa, Takefumi MIYOSHI, Hidehisa Shiomi, Shinichi Morisaka, Mitsuki Kobachi, Kazuma Moriuchi, Ryohei Niwase, Yuta Kawai, Keisuke Koike, Satoshi Funada, Shuhei Tamate, Yutaka Tabuchi, Yasunobu Nakamura

    APS March Meeting 2022　2022/03/14

  15. Effective Hamiltonian estimation of superconducting qubits by cross entropy minimization

    Kazuma Moriuchi, Kosuke Mitarai, Kazuhisa Ogawa, Keisuke Fujii

    The 45th Quantum Information Technology Symposium (QIT45)　2021/12/01

  16. Direct measurement of matrix elements of density-, process- and measurement-matrices using diagrammatic representation

    Masaya Takahashi, Kazuhisa Ogawa, Akihisa Tomita

    The 45th Quantum Information Technology Symposium (QIT45)　2021/12/01

  17. Operational formulation of weak values as sensitivity of post-selection probability amplitude to small transformation

    Kazuhisa Ogawa

    Workshop on Quantum Foundations: Measurement & Entanglement　2020/02/10

  18. Direct measurement method of weak values without using probes

    Kazuhisa Ogawa, Hirokazu Kobayashi, Akihisa Tomita

    Conference on Quantum Information and Quantum Control-VIII (CQIQC-VIII)　2019/08/26

  19. Diagrammatic representation of direct measurement systems of quantum states, processes, and measurements

    Kazuhisa Ogawa, Hirokazu Kobayashi, Akihisa Tomita

    Rochester Conference on Coherence and Quantum Optics (CQO-11)　2019/08/04

  20. 事前・事後選択系における微小変換に対する感度としての弱値の直接的理解

    小川 和久, 小林 弘和, 富田 章久

    日本物理学会第 74 回年次大会　2019/03/17

  21. 弱いシステム–プローブ相互作用を用いない弱値取得法

    小川 和久

    弱値・弱測定の新展望　2019/03/10

  22. 事前・事後選択系における微小変換に対する感度としての弱値の直接的理解

    小川 和久

    非エルミート系, 及び光学実験に関する研究会　2019/03/01

  23. Weak value measurement method without probes

    Kazuhisa OGAWA, Hirokazu KOBAYASHI, Akihisa TOMITA

    QIT39　2018/11/26

  24. 弱測定(プローブ)を用いない弱値取得

    小川 和久

    第8回QUATUO研究会 Back to Kochi　2018/10/06

  25. システム–プローブ間の弱い相互作用を用いない弱値取得法

    小川 和久, 安彦 修, 小林 弘和, 中西 俊博, 富田 章久

    量子情報・物性の新潮流　2018/08/02

  26. Acquisition method of complex values defined by system’s evolution using qubit probes

    Kazuhisa OGAWA, Osamu YASUHIKO, Hirokazu KOBAYASHI, Toshihiro NAKANISHI, Takumi OKAZAKI, Akihisa TOMITA

    QIT38　2018/06/04

  27. 光量子イメージングとその時間反転系を用いた古典光学的実現

    小川 和久

    第20回光科学若手研究会　2018/05/12

  28. 時間反転法を用いた位置-波数もつれ光子対が示す量子干渉の古典光学的観測 およびその光イメージングへの応用可能性

    小川 和久, 小林 弘和, 富田 章久

    弱値・弱測定、エンタングルメント、量子コヒーレンスの新地平(QMNH2018)　2018/02/21

  29. 3状態間の相対関係の直観的表現

    小川 和久

    第7回QUATUO研究会 Phoquet Chapter in 北海道　2017/10/07

  30. Experimental Reconstruction of a Sub-diffraction-limited Focused Beam Spot by a Time-reversed Two-photon System

    Kazuhisa Ogawa, Akihisa Tomita

    ICO-24　2017/08/24

  31. Classical observation of a focused beam spot beyond the diffraction limit by using the time-reversal symmetry of quantum mechanics

    Kazuhisa OGAWA, Hirokazu KOBAYASHI, Akihisa TOMITA

    QIT36　2017/05/30

  32. Post-selective observation of a focused beam spot beyond the diffraction limit

    K. Ogawa, A. Tomita

    2017/03/21

  33. Photonic de Broglie波長による ビームスポット径の古典的観測

    Kazuhisa Ogawa

    QUATUO2017　2017/01/08

  34. Classical realization of “quantum-optical coherence tomography” by time-resolved pulse interferometry

    Kazuhisa Ogawa, Masao Kitano

    QCMC2016　2016/07/04

  35. 量子力学の時間反転対称性を用いた分散消去光コヒーレンストモグラフィの古典光学的実現

    小川 和久, 北野 正雄

    日本物理学会第71回年次大会　2016/03/21

  36. 時間反転光学系を用いた, 量子干渉パターンの古典光学的実現, および光計測への応用

    小川 和久, 北野 正雄

    QMKEK2016　2016/02/17

  37. 量子力学の時間反転対称性を用いた分散消去光コヒーレンストモグラフィの古典光学的実現

    小川 和久, 北野 正雄

    QUATUO研究会2016　2016/01/10

  38. 量子力学の時間反転対称性を用いた量子光学干渉の古典光学的実現

    小川 和久

    量子情報関西Student Chapter　2015/11/28

  39. Dispersion-cancelled and artifact-background-free optical coherence tomography

    Kazuhisa Ogawa

    2015/11/24

  40. Dispersion-Insensitive Optical Coherence Tomography by Time-Reversal Method

    Kazuhisa Ogawa, Shuhei Tamate, Toshihiro Nakanishi, Hirokazu Kobayashi, Masao Kitano

    International Symposium on Photonics and Electronics Science and Engineering 2015　2015/03/09

  41. Observation of Geometric Phases in Three-State Systems for Two-Photon Polarization

    Kazuhisa Ogawa, Shuhei Tamate, Hirokazu Kobayashi, Toshihiro Nakanish, Masao Kitano

    QCMC2014　2014/11/02

  42. Classical Realization of Dispersion Cancellation by Time-Reversal Method

    Kazuhisa Ogawa, Shuhei Tamate, Toshihiro Nakanishi, Hirokazu Kobayashi, Masao Kitano

    Okinawa School in Physics: Coherent Quantum Dynamics 2014　2014/09/16

  43. Classical Realization of Dispersion Cancellation by Time-Reversal Method

    Kazuhisa Ogawa

    Physics of Quantum Information Processing　2014/08/25

  44. 時間反転Hong-Ou-Mandel干渉計を用いた分散消去の古典的実現

    小川 和久, 玉手 修平, 中西 俊博, 小林 弘和, 北野 正雄

    基礎物理学研究所研究会 若手のための量子情報基礎セミナー　2014/08/08

  45. Classical Realization of Dispersion Cancellation by Using Transform-limited Pulses

    Kazuhisa Ogawa, Shuhei Tamate, Toshihiro Nakanishi, Hirokazu Kobayashi, Masao Kitano

    CLEO:2014　2014/06/11

  46. フーリエ限界パルス光を用いた時間反転分散消去

    小川 和久, 玉手 修平, 中西 俊博, 小林 弘和, 北野 正雄

    日本物理学会第69回年次大会　2014/03/28

  47. 時間反転Hong-Ou-Mandel干渉計を用いた分散消去の古典的実現

    小川 和久, 玉手 修平, 中西 俊博, 小林 弘和, 北野 正雄

    基礎物理学研究所研究会 量子情報の新展開　2014/03/23

  48. フーリエ限界パルス光を用いた時間反転分散消去

    小川 和久, 玉手 修平, 中西 俊博, 小林 弘和, 北野 正雄

    第3回QUATUO研究会　2014/01/11

  49. Two-Photon Phase Super-Resolution with High Visibility Using Time-Reversal Method

    Kazuhisa Ogawa, Shuhei Tamate, Hirokazu Kobayashi, Masao Kitano

    The international workshop on new science and technologies using entangled photons (NSTEP2013)　2013/07/08

  50. 時間反転2光子干渉を用いた高次元幾何学的位相の測定

    小川 和久

    第2回QUATUO研究会　2013/01/06

  51. 3状態系における幾何学的位相の測定

    小川 和久, 玉手修平, 小林弘和, 北野正雄

    日本物理学会2012年秋季大会　2012/09/19

  52. 2光子干渉の古典アナロジを用いた高次元幾何学的位相の測定

    小川 和久

    FIRST-QIPP夏期研修会2012　2012/08/10

  53. 2光子干渉の古典アナロジ

    小川 和久

    第12回量子情報関西Student Chapter　2012/04/19

  54. 幾何学的位相のマヨラナ表現

    小川 和久, 玉手 修平, 小林 弘和, 北野 正雄

    日本物理学会2011年秋季大会　2011/09/22

  55. 3頂点幾何学的位相のMajorana表現

    小川 和久

    関西・関東学生チャプター合同研究会　2011/08/12

  56. 3 状態量子系における幾何学的位相

    小川和久, 玉手修平, 小林弘和, 北野正雄

    第24回量子情報技術研究会 (QIT24)　2011/05/12