Physical implementation of the quantum receivers for practical quantum channel coding

• Project/Area Number: 19740253
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• 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
• Principal Investigator: TAKEOKA Masahiro 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 (70415850)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥2,210,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥210,000); Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2007: ¥1,300,000 (Direct Cost: ¥1,300,000)
• Keywords: 量子情報 / 量子符号化 / 量子最適受信機 / コヒーレント光通信 / ホモダイン限界 / 射影測定

Research Abstract

宇宙通信などの超長距離光通信の通信性能限界は、従来の光通信理論ではショット雑音で制限されるとみなされてきた。しかし量子情報理論によれば、光の量子性を考慮した受信機によりこの限界を著しく凌駕できることが予想されている。本研究では、光子検出器等の現実のデバイスで実現可能な量子受信機を提案し、その最初の原理実証及び他の量子光学実験への応用を実現した。

Research Products

• [Journal Article] Generation of large-amplitude coherent-state superposition via ancilla-assisted photon subtraction (2008)
  • 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
• [Journal Article] Demonstration of near-optimal discrimination of optical coherent states (2008)
  • Author(s): C. Wittmann, M. Takeoka, K. N. Cassemiro, M. Sasaki, G. Leuchs, U. L. Andersen
  • Journal Title: Physical Review Letters 101
  • Peer Reviewed
• [Journal Article] Discrimination of the binary coherent signal: Gaussian-operation limit and simple non-Gaussian near-optimal receivers (2008)
  • Author(s): M. Takeoka and M. Sasaki
  • Journal Title: Physical Review A 78
  • Peer Reviewed
• [Journal Article] Temporally multiplexed superposition states of continuous variables (2008)
  • Author(s): M. Sasaki, M. Takeoka, and H. Takahashi
  • Journal Title: Physical Review A 77
  • Peer Reviewed
• [Journal Article] Large-amplitude coherent-state superposition generated by a time-separated two-photon subtraction from a continuous-wave squeezed vacuum (2008)
  • Author(s): M. Takeoka, H. Takahashi, and M. Sasaki
  • Journal Title: Physical Review A 77
  • Peer Reviewed
• [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
• [Journal Article] Generation of large-amplitude coherent-state superposition via ancilla-assisted photon subtraction (2008)
  • Author(s): H. Takahashi
  • Journal Title: Physical Review Letters 101
  • Peer Reviewed
• [Journal Article] Demonstration of near-optimal discrimination of optical coherent states (2008)
  • Author(s): C. Wittmann
  • Journal Title: Physical Review Letters 101
  • Peer Reviewed
• [Journal Article] Discrimination of the binary coherent signal : Gaussian-operation limit and simple non-Gaussian near-optimal receivers (2008)
  • Author(s): M. Takeoka
  • Journal Title: Physical Review A 78
  • Peer Reviewed
• [Journal Article] Temporally multiplexed superposition states of continuous variables (2008)
  • Author(s): M. Sasaki
  • Journal Title: Physical Review A 77
  • Peer Reviewed
• [Journal Article] Large-amplitude coherent-state superposition generated by a time-separated two-photon subtraction from a continuous-wave squeezed vacuum (2008)
  • Author(s): M. Takeoka
  • Journal Title: Physical Review A 77
  • Peer Reviewed
• [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
• [Journal Article] Implementing projective measurements with linear optics (2007)
  • 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
• [Journal Article] Conditional generation of an arbitrary superposition of coherent states (2007)
  • Author(s): M. Takeoka and M. Sasaki
  • Journal Title: Physical Review A 75
  • Peer Reviewed
• [Journal Article] Projective measurements via linear optics and photon detectors (2007)
  • Author(s): M. Takeoka
  • Journal Title: Optics and Spectroscopy 103 Pages: 98-106
  • Peer Reviewed
• [Journal Article] Implementing projective measurements with linear optics (2007)
  • Author(s): M.Takeoka
  • Journal Title: Proc.Of The 8th International Conference on Quantum Communication, MeasurementandComputing(QCMC2006) 1 Pages: 413-416
  • Peer Reviewed
• [Journal Article] Conditional generation of anarbitrary superposition of coherent states (2007)
  • Author(s): M.Takeoka
  • Journal Title: Physical Review A 75
  • Peer Reviewed
• [Journal Article] Projective measurements via linear optics and photon detectors (2007)
  • Author(s): M.Takeoka
  • Journal Title: Optics and Spectroscopy 103 Pages: 98-106
  • Peer Reviewed
• [Presentation] Experimental implementation of near-optimal quantum measurements of optical coherent state (2009)
  • Author(s): M. Takeoka
  • Organizer: DEX-SMI Workshop on Quantum Statistical Inference
  • Place of Presentation: NII, 東京
  • Year and Date: 2009-03-02
• [Presentation] Quantum receivers and quantum coding toward the quantum-limited performance in long-haul optical communications (2009)
  • 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
• [Presentation] Discrimination of optical coherent states via near-optimal quantum receivers (2009)
  • Author(s): M. Takeoka
  • Organizer: SPIE Photonics West
  • Place of Presentation: San Jose, USA
  • Year and Date: 2009-01-29
• [Presentation] Experimental implementation of near-optimal quantum measurements of optical coherent state (2009)
  • Author(s): M. Takeoka et al.
  • Organizer: DEX-SMI Workshop on Quantum Statistical Inference, NII
  • Place of Presentation: Tokyo, Japan
• [Presentation] Quantum receivers and quantum coding toward the quantum-limited performance in long-haul optical communications (2009)
  • Author(s): M. Takeoka et al.
  • Organizer: International Conference on Space Optical Systems and Applications (ICSOS2009)
  • Place of Presentation: Miraikan, Tokyo, Japan
• [Presentation] Discrimination of optical coherent states via near-optimal quantum receivers (2009)
  • Author(s): M. Takeoka et al.
  • Organizer: SPIE Photonics West
  • Place of Presentation: San Jose, CA, USA
• [Presentation] Generation of optical Schrodinger cat-like states and classical-quantum channel coding (2008)
  • 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
• [Presentation] Practical near-optimal quantum receivers for the BPSK coherent signals (2008)
  • Author(s): M. Takeoka
  • Organizer: 2008 International symposium on physics of quantum technology
  • Place of Presentation: 奈良
  • Year and Date: 2008-11-25
• [Presentation] Implementation of quantum receivers for communication and sensing (2008)
  • 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
• [Presentation] Near-optimal quantum receivers for the coherent state discrimination (2008)
  • Author(s): M. Takeoka
  • Organizer: QCMC 2008
  • Place of Presentation: Calgary, Canada
  • Year and Date: 2008-08-19
• [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
• [Presentation] Near-optimal quantum state discrimination of optical coherent states (2008)
  • Author(s): C. Wittmann
  • Organizer: QELS2008
  • Place of Presentation: San Jose, USA
  • Year and Date: 2008-05-04
• [Presentation] コヒーレント信号識別における準最適量子受信機の原理実証 (2008)
  • Author(s): 辻野 賢治
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-24
• [Presentation] Generation of optical Schrodinger cat-like states and classicalquantum channel coding (2008)
  • Author(s): M. Takeoka
  • Organizer: Workshop on topological cluster state computing in optics 2008, NII
  • Place of Presentation: Tokyo, Japan
• [Presentation] Practical near-optimal quantum receivers for the BPSK coherent signals (2008)
  • Author(s): M. Takeoka et al.
  • Organizer: 2008 International symposium on physics of quantum technology
  • Place of Presentation: Nara, Japan
• [Presentation] Implementation of quantum receivers for communication and sensing (2008)
  • Author(s): M. Takeoka
  • Organizer: 2008 xQIT conference, Difficult problems in quantum information theory, MIT
  • Place of Presentation: Cambridge, MA, USA, November
• [Presentation] Near-optimal quantum receivers for the coherent state discrimination (2008)
  • Author(s): M. Takeoka et al.
  • Organizer: The 9th International Conference on Quantum Communication, Measurement and Computing (QCMC2008)
  • Place of Presentation: Calgary, Canada
• [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
• [Presentation] 連続量ベル相関測定による量子もつれの推定 (2008)
  • Author(s): 北川晃 他
  • Organizer: 第18回量子情報技術研究会
  • Place of Presentation: 東京大学
• [Presentation] Near-optimal quantum state discrimination of optical coherent states (2008)
  • Author(s): C. Wittmann et al.
  • Organizer: Quantum Electronics and Laser Science Conference (QELS2008)
  • Place of Presentation: San Jose, USA
• [Presentation] コヒーレント信号識別における準量子最適受信機の原理実証 (2008)
  • Author(s): 辻野賢治他
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大学
• [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
• [Presentation] Near-optial quantum receivers for the BPSK coherent signals (2007)
  • Author(s): M.Takeoka
  • Organizer: SPIE Optics East
  • Place of Presentation: Boston,USA
  • Year and Date: 2007-06-21
• [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
• [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
• [Presentation] Near-optimal quantum receivers for the BPSK coherent signals (2007)
  • Author(s): M. Takeoka et al.
  • Organizer: SPIE Optics East, Boston
  • Place of Presentation: SPIE Optics East, Boston, USA
• [Presentation] Discrimination of binary optical quantum states (2007)
  • Author(s): M. Takeoka
  • Organizer: Identifying quantum states and operations: theory and applications
  • Place of Presentation: Budmerice, Slovakia
• [Patent(Industrial Property Rights)] 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
• [Patent(Industrial Property Rights)] Quantum source coding apparatus and quantum information communication system (2008)
  • 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
• [Patent(Industrial Property Rights)] 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
• [Patent(Industrial Property Rights)] Quantum source coding apparatus and quantum information communication system (2008)
  • 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