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Takeoka Masahiro  武岡 正裕

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武岡 正裕  タケオカ マサヒロ

TAKEOKA Masahiro  武岡 正裕

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Researcher Number 70415850
Other IDs
Affiliation (Current) 2025: 慶應義塾大学, 理工学部(矢上), 教授
2025: 国立研究開発法人情報通信研究機構, 未来ICT研究所, 研究統括
Affiliation (based on the past Project Information) *help 2018 – 2020: 国立研究開発法人情報通信研究機構, 未来ICT研究所量子ICT先端開発センター, センター長
2011: National Institute of Information and Communications Technology, 研究員
2010: 独立行政法人情報通信研究機構, 新世代ネットワーク研究センター量子ICTグループ, 主任研究員
2008: National Institute of Information and Communications Technology, 新世代ネットワーク研究センター・量子ICTグループ, 主任研究員
2008: National Institute of Information and Communications Technology, 第一研究部門 新世代ネットワーク研究センター 量子ICTグループ, 主任研究員
2007: National Institute of Information and Communications Technology, 大研究部門新世代ネットワーク研究センター・光波量子・ミリ波ICTグループ, 主任研究員
Review Section/Research Field
Principal Investigator
Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related / Atomic/Molecular/Quantum electronics / 原子・分子・量子エレクトロニクス・プラズマ
Keywords
Principal Investigator
ネットワーク通信路 / 量子暗号 / 波長多重量子鍵配送 / ブロードキャスト通信路 / 連続量量子鍵配送 / 量子光学 / 量子受信機 / 量子測定 / 射影測定 / ホモダイン限界 … More / コヒーレント光通信 / 量子最適受信機 / 量子符号化 / 量子情報 Less
  • Research Projects

    (3 results)
  • Research Products

    (56 results)
  • Co-Researchers

    (3 People)
  •  Broadcast continuous variable quantum key distributionPrincipal Investigator

    • Principal Investigator
      Takeoka Masahiro
    • Project Period (FY)
      2018 – 2020
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
    • Research Institution
      National Institute of Information and Communications Technology
  •  光子計数と干渉を用いた量子受信機とその量子通信への応用Principal Investigator

    • Principal Investigator
      武岡 正裕
    • Project Period (FY)
      2010 – 2011
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Atomic/Molecular/Quantum electronics
    • Research Institution
      National Institute of Information and Communications Technology
  •  Physical implementation of the quantum receivers for practical quantum channel codingPrincipal Investigator

    • Principal Investigator
      TAKEOKA Masahiro
    • Project Period (FY)
      2007 – 2008
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      原子・分子・量子エレクトロニクス・プラズマ
    • Research Institution
      National Institute of Information and Communications Technology

All 2021 2020 2019 2018 2011 2010 2009 2008 2007

All Journal Article Presentation Patent

  • [Journal Article] Limit of Gaussian operations and measurements for Gaussian state discrimination and its application to state comparison2021

    • Author(s)
      Roberson David E.、Izumi Shuro、Roga Wojciech、Neergaard-Nielsen Jonas S.、Takeoka Masahiro、Andersen Ulrik L.
    • Journal Title

      Physical Review A

      Volume: 103 Issue: 2

    • DOI

      10.1103/physreva.103.022423

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18H01157
  • [Journal Article] Wavelength division multiplexing of 194 continuous variable quantum key distribution channels2020

    • Author(s)
      Tobias A. Eriksson, Ruben S. Luis, Benjamin J. Puttnam, Georg Rademacher, Mikio Fujiwara, Yoshinari Awaji, Hideaki Furukawa, Naoya Wada, Masahiro Takeoka, and Masahide Sasaki
    • Journal Title

      Journal of Lightwave Technology

      Volume: -

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18H01157
  • [Journal Article] Wavelength division multiplexing of continuous variable quantum key distribution and 18.3 Tbit/s data channels2019

    • Author(s)
      Eriksson Tobias A.、Hirano Takuya、Puttnam Benjamin J.、Rademacher Georg、Lu?s Ruben S.、Fujiwara Mikio、Namiki Ryo、Awaji Yoshinari、Takeoka Masahiro、Wada Naoya、Sasaki Masahide
    • Journal Title

      Communications Physics

      Volume: 2 Issue: 1 Pages: 9-9

    • DOI

      10.1038/s42005-018-0105-5

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18H05237, KAKENHI-PROJECT-18H01157
  • [Journal Article] Crosstalk Impact on Continuous Variable Quantum Key Distribution in Multicore Fiber Transmission2019

    • Author(s)
      Eriksson Tobias A.、Puttnam Benjamin J.、Rademacher Georg、Luis Ruben S.、Fujiwara Mikio、Takeoka Masahiro、Awaji Yoshinari、Sasaki Masahide、Wada Naoya
    • Journal Title

      IEEE Photonics Technology Letters

      Volume: 31 Issue: 6 Pages: 467-470

    • DOI

      10.1109/lpt.2019.2898458

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18H01157
  • [Journal Article] Secret key rates for intensity-modulated dual-threshold detection key distribution under individual beam splitting attacks2018

    • Author(s)
      Eriksson Tobias A.、Trinh Phuc V.、Endo Hiroyuki、Takeoka Masahiro、Sasaki Masahide
    • Journal Title

      Optics Express

      Volume: 26 Issue: 16 Pages: 20409-20409

    • DOI

      10.1364/oe.26.020409

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17H01281, KAKENHI-PROJECT-18H01157
  • [Journal Article] Engineering of optical continuous-variable qubits via displaced photon subtraction : Multimode analysis2011

    • Author(s)
      M.Takeoka
    • Journal Title

      Journal of Modern Optics

      Volume: 58 Pages: 266-275

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22740270
  • [Journal Article] 連続量変数の光量子計算と量子情報通信2008

    • Author(s)
      武岡 正裕
    • Journal Title

      光学 37

    • NAID

      10023978130

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Discrimination of the binary coherent signal : Gaussian-operation limit and simple non-Gaussian near-optimal receivers2008

    • Author(s)
      M. Takeoka
    • Journal Title

      Physical Review A 78

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Temporally multiplexed superposition states of continuous variables2008

    • Author(s)
      M. Sasaki, M. Takeoka, and H. Takahashi
    • Journal Title

      Physical Review A 77

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] 連続量変数の光量子計算と量子情報通信2008

    • Author(s)
      武岡正裕
    • Journal Title

      光学 37

      Pages: 692-697

    • NAID

      10023978130

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Demonstration of near-optimal discrimination of optical coherent states2008

    • Author(s)
      C. Wittmann, M. Takeoka, K. N. Cassemiro, M. Sasaki, G. Leuchs, U. L. Andersen
    • Journal Title

      Physical Review Letters 101

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Discrimination of the binary coherent signal: Gaussian-operation limit and simple non-Gaussian near-optimal receivers2008

    • Author(s)
      M. Takeoka and M. Sasaki
    • Journal Title

      Physical Review A 78

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Generation of large-amplitude coherent-state superposition via ancilla-assisted photon subtraction2008

    • Author(s)
      H. Takahashi, K. Wakui, S. Suzuki, M. Takeoka, K. Hayasaka, A. Furusawa, and M. Sasaki
    • Journal Title

      Physical Review Letters 101

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Large-amplitude coherent-state superposition generated by a time-separated two-photon subtraction from a continuous-wave squeezed vacuum2008

    • Author(s)
      M. Takeoka, H. Takahashi, and M. Sasaki
    • Journal Title

      Physical Review A 77

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Large-amplitude coherent-state superposition generated by a time-separated two-photon subtraction from a continuous-wave squeezed vacuum2008

    • Author(s)
      M. Takeoka
    • Journal Title

      Physical Review A 77

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Conditional generation of anarbitrary superposition of coherent states2007

    • Author(s)
      M.Takeoka
    • Journal Title

      Physical Review A 75

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Projective measurements via linear optics and photon detectors2007

    • Author(s)
      M.Takeoka
    • Journal Title

      Optics and Spectroscopy 103

      Pages: 98-106

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Conditional generation of an arbitrary superposition of coherent states2007

    • Author(s)
      M. Takeoka and M. Sasaki
    • Journal Title

      Physical Review A 75

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Implementing projective measurements with linear optics2007

    • Author(s)
      M. Takeoka, M. Sasaki, and N. Lutkenhaus
    • Journal Title

      Proc. of the 8th International Conference on Quantum Communication, Measurement and Computing (QCMC2006) 1

      Pages: 413-416

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Implementing projective measurements with linear optics2007

    • Author(s)
      M.Takeoka
    • Journal Title

      Proc.Of The 8th International Conference on Quantum Communication, MeasurementandComputing(QCMC2006) 1

      Pages: 413-416

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Journal Article] Projective measurements via linear optics and photon detectors2007

    • Author(s)
      M. Takeoka
    • Journal Title

      Optics and Spectroscopy 103

      Pages: 98-106

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Patent] Quantum source coding apparatus and quantum information communication system2008

    • Inventor(s)
      M. Sasaki, Y. Mitsumori, A. Hasegawa, M. Takeoka, J. A. Vaccaro, S. M. Barnett, E. Andersson
    • Industrial Property Rights Holder
      M. Sasaki, Y. Mitsumori, A. Hasegawa, M. Takeoka, J. A. Vaccaro, S. M. Barnett, E. Andersson
    • Acquisition Date
      2008-07-22
    • Overseas
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Patent] 量子干渉計測システム2008

    • Inventor(s)
      武岡正裕、佐々木雅英、番雅司
    • Industrial Property Rights Holder
      (独)情報通信研究機構
    • Filing Date
      2008-12-26
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Patent] Quantum source coding apparatus and quantum information communication system2008

    • Inventor(s)
      M. Sasaki, Y. Mitsumori, A. Hasegawa, M. Takeoka, J. A. Vaccaro, S. M. Barnett, E. Andersson
    • Industrial Property Rights Holder
      (独)情報通信研究機構
    • Filing Date
      2008-07-22
    • Overseas
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Patent] 量子干渉計測システム2008

    • Inventor(s)
      武岡 正裕、佐々木 雅英、番 雅司
    • Industrial Property Rights Holder
      武岡 正裕、佐々木 雅英、番 雅司
    • Acquisition Date
      2008-12-26
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Multipartite entanglement and secret key distribution in quantum networks2020

    • Author(s)
      Eneet Kaur, Masahiro Takeoka, Mark M. Wilde, and Wojciech Roga
    • Organizer
      22nd Annual Southwest Quantum Information and Technology Workshop (SQuinT)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18H01157
  • [Presentation] 量子ネットワークの量子通信路容量について2020

    • Author(s)
      武岡 正裕
    • Organizer
      電子情報通信学会2020年総合大会
    • Invited
    • Data Source
      KAKENHI-PROJECT-18H01157
  • [Presentation] Continuous variable quantum key distribution multiplexed with high throughput coherent channels2019

    • Author(s)
      Tobias Eriksson, Takuya Hirano, Benjamin Puttnam, Georg Rademacher, Ruben Luis, Mikio Fujiwara, Ryo Namiki, Yoshinari Awaji, Masahiro Takeoka, Naoya Wada and Masahide Sasaki
    • Organizer
      9th International Conference on Quantum Cryptography (QCrypt 2019)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18H01157
  • [Presentation] Continuous Variable Quantum Key Distribution Multiplexed with Classical Channels2018

    • Author(s)
      Tobias Eriksson, Takuya Hirano, Georg Rademacher, Benjamin Puttnam, Ruben Luis, Mikio Fujiwara, Ryo Namiki, Ken-Ichiro Yoshino, Akio Tajima, Yoshinari Awaji, Masahiro Takeoka, Naoya Wada and Masahide Sasaki
    • Organizer
      8th International Conference on Quantum Cryptography
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18H01157
  • [Presentation] Joint Propagation of Continuous Variable Quantum Key Distribution and18×24.5Gbaud PM-16QAM Channels2018

    • Author(s)
      Tobias A. Eriksson, Takuya Hirano, Georg Rademacher, Benjamin J. Puttnam, Ruben S. Luis, Mikio Fujiwara, Ryo Namiki, Yoshinari Awaji, Masahiro Takeoka, Naoya Wada and Masahide Sasaki
    • Organizer
      2018 European Conference on Optical Communication (ECOC)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18H01157
  • [Presentation] Coexistence of Continuous Variable Quantum Key Distribution and 7 × 12.5 Gbit/s Classical Channels2018

    • Author(s)
      Tobias Eriksson, Takuya Hirano, Motoharu Ono, Mikio Fujiwara, Ryo Namiki, Ken-ichiro Yoshino, Akio Tajima, Masahiro Takeoka and Masahide Sasaki,
    • Organizer
      IEEE Summer Topicals Meeting Series
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18H01157
  • [Presentation] Quantum detection technology with a transition edge sensor : Beyond simple homodyne and photon counting detectors2010

    • Author(s)
      M.Takeoka
    • Organizer
      QCMC2010
    • Place of Presentation
      University of Queensland, Brisbane, Australia
    • Year and Date
      2010-07-22
    • Data Source
      KAKENHI-PROJECT-22740270
  • [Presentation] TESを用いたコヒーレント状態重ね合わせ量子ビットの近似的な射影測定の実現2010

    • Author(s)
      武岡正裕
    • Organizer
      第22回量子情報技術研究会
    • Place of Presentation
      大阪大学、大阪府
    • Year and Date
      2010-05-10
    • Data Source
      KAKENHI-PROJECT-22740270
  • [Presentation] Quantum receiver technologies : minimum error detection and more2010

    • Author(s)
      M.Takeoka
    • Organizer
      UQCC2010
    • Place of Presentation
      ANA Intercontinental Tokyo, Tokyo, Japan
    • Year and Date
      2010-10-19
    • Data Source
      KAKENHI-PROJECT-22740270
  • [Presentation] Experimental implementation of near-optimal quantum measurements of optical coherent state2009

    • Author(s)
      M. Takeoka et al.
    • Organizer
      DEX-SMI Workshop on Quantum Statistical Inference, NII
    • Place of Presentation
      Tokyo, Japan
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Experimental implementation of near-optimal quantum measurements of optical coherent state2009

    • Author(s)
      M. Takeoka
    • Organizer
      DEX-SMI Workshop on Quantum Statistical Inference
    • Place of Presentation
      NII, 東京
    • Year and Date
      2009-03-02
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Discrimination of optical coherent states via near-optimal quantum receivers2009

    • Author(s)
      M. Takeoka et al.
    • Organizer
      SPIE Photonics West
    • Place of Presentation
      San Jose, CA, USA
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Quantum receivers and quantum coding toward the quantum-limited performance in long-haul optical communications2009

    • Author(s)
      M. Takeoka
    • Organizer
      ICSOS 2009
    • Place of Presentation
      日本科学未来館、東京
    • Year and Date
      2009-02-05
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Discrimination of optical coherent states via near-optimal quantum receivers2009

    • Author(s)
      M. Takeoka
    • Organizer
      SPIE Photonics West
    • Place of Presentation
      San Jose, USA
    • Year and Date
      2009-01-29
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Quantum receivers and quantum coding toward the quantum-limited performance in long-haul optical communications2009

    • Author(s)
      M. Takeoka et al.
    • Organizer
      International Conference on Space Optical Systems and Applications (ICSOS2009)
    • Place of Presentation
      Miraikan, Tokyo, Japan
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Generation of optical Schrodinger cat-like states and classicalquantum channel coding2008

    • Author(s)
      M. Takeoka
    • Organizer
      Workshop on topological cluster state computing in optics 2008, NII
    • Place of Presentation
      Tokyo, Japan
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Implementation of quantum receivers for communication and sensing2008

    • Author(s)
      M. Takeoka
    • Organizer
      2008 xQIT conference, Difficult problems in quantum information theory, MIT
    • Place of Presentation
      Cambridge, MA, USA, November
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] 量子情報通信 : 研究の現状と展望2008

    • Author(s)
      武岡 正裕
    • Organizer
      文科省科研費補助金 特定領域研究「新世代光通信へのイノベーション」第2回量子情報ミニ研究会
    • Place of Presentation
      有馬
    • Year and Date
      2008-07-07
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Near-optimal quantum receivers for the coherent state discrimination2008

    • Author(s)
      M. Takeoka et al.
    • Organizer
      The 9th International Conference on Quantum Communication, Measurement and Computing (QCMC2008)
    • Place of Presentation
      Calgary, Canada
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Generation of optical Schrodinger cat-like states and classical-quantum channel coding2008

    • Author(s)
      M. Takeoka
    • Organizer
      Workshop on topological cluster state computing in optics 2008
    • Place of Presentation
      NII, 東京
    • Year and Date
      2008-12-11
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Practical near-optimal quantum receivers for the BPSK coherent signals2008

    • Author(s)
      M. Takeoka
    • Organizer
      2008 International symposium on physics of quantum technology
    • Place of Presentation
      奈良
    • Year and Date
      2008-11-25
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Near-optimal quantum receivers for the coherent state discrimination2008

    • Author(s)
      M. Takeoka
    • Organizer
      QCMC 2008
    • Place of Presentation
      Calgary, Canada
    • Year and Date
      2008-08-19
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Practical near-optimal quantum receivers for the BPSK coherent signals2008

    • Author(s)
      M. Takeoka et al.
    • Organizer
      2008 International symposium on physics of quantum technology
    • Place of Presentation
      Nara, Japan
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Implementation of quantum receivers for communication and sensing2008

    • Author(s)
      M. Takeoka
    • Organizer
      2008 xQIT conference : Difficult problems in quantum information theory
    • Place of Presentation
      MIT, Cambridge, USA
    • Year and Date
      2008-11-19
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] 量子情報通信 : 研究の原状と展望2008

    • Author(s)
      武岡正裕
    • Organizer
      文科省科研費補助金特定領域研究「新世代光通信へのイノベーション」第2回量子情報ミニ研究会
    • Place of Presentation
      有馬
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Near-optimal quantum receivers for the BPSK coherent signals2007

    • Author(s)
      M. Takeoka et al.
    • Organizer
      SPIE Optics East, Boston
    • Place of Presentation
      SPIE Optics East, Boston, USA
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Near-optial quantum receivers for the BPSK coherent signals2007

    • Author(s)
      M.Takeoka
    • Organizer
      SPIE Optics East
    • Place of Presentation
      Boston,USA
    • Year and Date
      2007-06-21
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] コヒーレント信号識別のガウス測定限界と準最適量子測定について2007

    • Author(s)
      武岡正裕他
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      北海道大学
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Discrimination of binary optical quantum states2007

    • Author(s)
      M. Takeoka
    • Organizer
      Identifying quantum states and operations: theory and applications
    • Place of Presentation
      Budmerice, Slovakia
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] Discrimination of binary optical quantum states (Invited)2007

    • Author(s)
      M.Takeoka
    • Organizer
      Identifying quantum states and operations:theory and applications
    • Place of Presentation
      Budmerice,Slovakia
    • Year and Date
      2007-06-21
    • Data Source
      KAKENHI-PROJECT-19740253
  • [Presentation] コヒーレント信号識別のガウス測定限界と準最適量子測定にっいて2007

    • Author(s)
      武岡 正裕
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2007-09-24
    • Data Source
      KAKENHI-PROJECT-19740253
  • 1.  平野 琢也 (00251330)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 5 results
  • 2.  SASAKI Masahide
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 3.  FUJIWARA Mikio
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results

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