Finite-length analysis with computation complexity

• Project/Area Number: 17H01280
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Communication/Network engineering
• Research Institution: Nagoya University
• Principal Investigator: 林 正人 名古屋大学, 多元数理科学研究科, 教授 (40342836)
• Co-Investigator(Kenkyū-buntansha): 岡田 聡一 名古屋大学, 多元数理科学研究科, 教授 (20224016) ; 和田山 正 名古屋工業大学, 工学(系)研究科(研究院), 教授 (20275374)
• Project Period (FY): 2017-04-01 – 2022-03-31
• Project Status: Suspended (Fiscal Year 2020)
• Budget Amount: ¥41,990,000 (Direct Cost: ¥32,300,000、Indirect Cost: ¥9,690,000); Fiscal Year 2021: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000); Fiscal Year 2020: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000); Fiscal Year 2019: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000); Fiscal Year 2018: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000); Fiscal Year 2017: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
• Keywords: 盗聴通信路 / 双方向通信 / 秘匿通信 / 有限長評価 / LDPC符号 / 計算転送方式 / 安全性評価 / 衛星通信 / 量子通信 / 有限長解析 / 符号理論 / 情報理論 / セキュリティ

Outline of Annual Research Achievements

本年度は，双方型の盗聴通信路について扱った．特に，ガウスノイズ型の通信路とポアソン分布型の通信路の２つの場合について扱った．従来型の盗聴通信路では，盗聴者と送信者の間の相互情報量が正規受信者と送信者の間の相互情報量より小さいことが必要であった．そのため，盗聴者が正規受信者と送信者の間で盗聴する中間者攻撃(man-in-the-middle attack)の下では安全者通信ができない問題点があった．本研究では，正規受信者と送信者が双方向の通信を行うことにより，中間者攻撃の下でも安全な通信が可能となることを示した．
なお，多くの双方型の盗聴通信路では，多くのラウンドを想定しているが，本研究では１往復の通信しか行わない．さらに，本研究のモデルでは，往路の通信のみ，ノイズのある通信路を考え，復路では誤り訂正を付加すること想定して，ノイズのない通信路を想定している．そのため，きわめて単純な解析が可能となる．このような議論は，２元対称通信の場合にはすでになされていたが，衛星通信などに現れるガウスノイズ型の通信路やポアソン分布型の通信路ではなされておらず，これらの通信路での双方型の盗聴通信路は初めてである．なお，ガウスノイズ型の通信路では，BPSK変調の下で解析した．ポアソン分布型の通信路ではon-off keying 変調の下で解析を行った．なお，本研究で想定している盗聴者の攻撃はあくまでも受動的なものであり，能動的に送信者から正規受信者への通信を改変するものではない．能動的な盗聴者に対しては，より複雑な解析が必要となる．解析した．ポアソン分布型の通信路ではon-off keying 変調の下で解析を行った．

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

本年度は，双方型の盗聴通信路について扱ったが，この成果は，通信関係の分野で著名な論文誌であるIEEE Transactions on CommunicationsとIEEE Transactions on Information Forensics and Securityに掲載された．さらに，昨年度得られた計算-転送方式に関する成果もIEEE Transactions on Communicationsに掲載されるなど，本研究の成果は国際的に高く評価されていることがわかる．そのほか，ネットワーク符号に関する成果もIEEE Transactions on Information Theoryに掲載されており，これらのことから総合的におおむね順調に進展していると判断することができる．

Strategy for Future Research Activity

２０２０年４月１日より，名古屋大学を休職し，中国の南方科技大学で勤務するため，科研費の研究中断・再開制度を利用し，この科研費を２０２０年度から中断することになった．そのため，この科研費の再開は名古屋大学に復職した後となる．しばらく，研究が中断されるため，再開後の研究は，休職期間中に得られた知見を反映したものとなるため，現時点で具体的な推進方策を記述することは困難である．
敢えて述べるとすると，再開後の研究環境が変化していると予想されるが，そのような中でも，可能な限り新たな通信タスクについて，研究することが望ましいと考えられる．そのために，休職期間中には，新たな通信タスクに関して知見を得るために常にアンテナを張っておく予定である．

Research Products

• [Int'l Joint Research] バロセロナ自治大学(スペイン)
• [Int'l Joint Research] University of Duisburg-Essen(ドイツ)
• [Int'l Joint Research] 南方科技大学/復旦大学/上海科技大学(中国)
• [Int'l Joint Research] シンガポール国立大学(シンガポール)
• [Int'l Joint Research] オーストラリア国立大学(オーストリア)
• [Int'l Joint Research]
• [Int'l Joint Research] シンガポール国立大学(シンガポール)
• [Int'l Joint Research] バロセロナ自治大学(スペイン)
• [Int'l Joint Research] 南方科技大学/香港大学(中国)
• [Int'l Joint Research] ウォータールー大学/ペリメーター研究所(カナダ)
• [Int'l Joint Research] デュッセルドルフ大学(ドイツ)
• [Int'l Joint Research]
• [Int'l Joint Research] 南方科技大学/復旦大学/上海科技大学(中華人民共和国)
• [Int'l Joint Research] 香港大学(香港)
• [Int'l Joint Research] シンガポール国立大学/南洋理工科大学(シンガポール)
• [Int'l Joint Research] ケルン大学(ドイツ)
• [Int'l Joint Research] バロセロナ自治大学(スペイン)
• [Journal Article] Asymptotic Behavior of Spatial Coupling LDPC Coding for Compute-and-Forward Two-Way Relaying (2020)
  • Author(s): S. Takabe, and T. Wadayama, and M. Hayashi
  • Journal Title: IEEE Transactions on Communications Volume: -
  • DOI: 10.1109/tcomm.2020.2987891
  • Peer Reviewed
• [Journal Article] Two-Way Physical Layer Security Protocol for Gaussian Channels (2020)
  • Author(s): M. Hayashi and A. Vazquez-Castro
  • Journal Title: IEEE Transactions on Communications Volume: -
  • DOI: 10.1109/tcomm.2020.2973618
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Physical Layer Security Protocol for Poisson Channels for Passive Man-in-the-middle Attack (2020)
  • Author(s): M. Hayashi and A. Vazquez-Castro
  • Journal Title: IEEE Transactions on Information Forensics and Security Volume: 15 Pages: 2295-2305
  • DOI: 10.1109/tifs.2019.2963771
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Secure Network Code for Adaptive and Active Attacks with No-Randomness in Intermediate Nodes (2020)
  • Author(s): N. Cai and M. Hayashi
  • Journal Title: IEEE Transactions on Information Theory Volume: 66 Pages: 1428-1448
  • DOI: 10.1109/tit.2019.2957078
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Secure Quantum Network Code without Classical Communication (2020)
  • Author(s): S. Song and M. Hayashi
  • Journal Title: IEEE Transactions on Information Theory Volume: 66 Pages: 1178-1192
  • DOI: 10.1109/tit.2019.2933422
  • Peer Reviewed
• [Journal Article] Application of the resource theory of channels to communication scenarios (2020)
  • Author(s): R. Takagi, K. Wang, and M. Hayashi
  • Journal Title: Physical Review Letters Volume: 124 Pages: 120502-120502
  • DOI: 10.1103/physrevlett.124.120502
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Quantum state estimation with nuisance parameters (2020)
  • Author(s): J. Suzuki, Y. Yang, and M. Hayashi
  • Journal Title: Journal of Physics A: Mathematical and Theoretical Volume: - Pages: 0-0
  • DOI: 10.1088/1751-8121/ab8b78
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Finite-Length Analyses for Source and Channel Coding on Markov Chains (2020)
  • Author(s): M. Hayashi and S. Watanabe,
  • Journal Title: Entropy Volume: 22 Pages: 460-460
  • DOI: 10.3390/e22040460
  • Peer Reviewed / Open Access
• [Journal Article] Asymptotic properties for Markovian dynamics in quantum theory and general probabilistic theories (2020)
  • Author(s): Y. Yoshida and M. Hayashi
  • Journal Title: Journal of Physics A: Mathematical and Theoretical Volume: -
  • DOI: 10.1088/1751-8121/ab8599
  • Peer Reviewed / Open Access
• [Journal Article] Quantifying Time-Varying Sources in Magnetoencephalography -- A Discrete Approach (2020)
  • Author(s): Z. Yao, Z. Fan, M. Hayashi, and W. F. Eddy
  • Journal Title: Annals of Applied Statistics Volume: -
  • DOI: 10.1214/19-aoas1321
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Efficient Verification of Pure Quantum States in the Adversarial Scenario (2020)
  • Author(s): H. Zhu and M. Hayashi
  • Journal Title: PHYSICAL REVIEW LETTERS Volume: 123 Pages: 260504-260504
  • DOI: 10.1103/physrevlett.123.260504
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] LOCC estimator for pure state model in quantum parameter estimation with nuisance parameters (2020)
  • Author(s): Daiki Suruga and Masahito Hayashi
  • Journal Title: 数理解析研究所講究録 Volume: -
  • Open Access
• [Journal Article] A bialternant formula for odd symplectic characters and its application (2020)
  • Author(s): S. Okada
  • Journal Title: Josai Math. Monographs Volume: 12 Pages: 99-116
  • URL: https://libir.josai.ac.jp/il/meta_pub/G0000284repository_JOS-13447777-1209
  • Peer Reviewed / Open Access
• [Journal Article] Secure communication over fully quantum Gel'fand-Pinsker wiretap channel (2020)
  • Author(s): A. Anshu, M. Hayashi, and N. Warsi
  • Journal Title: IEEE Transactions on Information Theory Volume: -
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Second Order Analysis for Joint Source-Channel Coding With General Channel and Markovian Source (2019)
  • Author(s): Ryo Yaguchi and Masahito Hayashi
  • Journal Title: IEEE Transactions on Information Theory Volume: 65 Pages: 5750-5770
  • DOI: 10.1109/tit.2019.2917200
  • Peer Reviewed
• [Journal Article] Quantum computational universality of hypergraph states with pauli-X and Z basis measurements (2019)
  • Author(s): Yuki Takeuchi, Tomoyuki Morimae and Masahito Hayashi
  • Journal Title: Information Geometry Volume: 9 Pages: 13585-13585
  • DOI: 10.1038/s41598-019-49968-3
  • Peer Reviewed / Open Access
• [Journal Article] Perfect Discrimination of Non-Orthogonal Separable Pure States on Bipartite System in General Probabilistic Theory (2019)
  • Author(s): H. Arai, Y. Yoshida, and M. Hayashi
  • Journal Title: Journal of Physics A: Mathematical and Theoretical Volume: 52 Pages: 465304-465304
  • DOI: 10.1088/1751-8121/ab4b64
  • Peer Reviewed
• [Journal Article] General framework for verifying pure quantum states in the adversarial scenario (2019)
  • Author(s): H. Zhu and M. Hayashi
  • Journal Title: PHYSICAL REVIEW A Volume: 100 Pages: 062335-062335
  • DOI: 10.1103/physreva.100.062335
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Efficient verification of hypergraph states (2019)
  • Author(s): H. Zhu and M. Hayashi
  • Journal Title: PHYSICAL REVIEW APPLIED Volume: 12 Pages: 054047-054047
  • DOI: 10.1103/physrevapplied.12.054047
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Optimal verification and fidelity estimation of maximally entangled states (2019)
  • Author(s): H. Zhu and M. Hayashi
  • Journal Title: PHYSICAL REVIEW A Volume: 99 Pages: 052346-052346
  • DOI: 10.1103/physreva.99.052346
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Optimal verification of two-qubit pure states (2019)
  • Author(s): K. Wang and M. Hayashi
  • Journal Title: PHYSICAL REVIEW A Volume: 100 Pages: 032315-032315
  • DOI: 10.1103/physreva.100.032315
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Verifying commuting quantum computations via fidelity estimation of weighted graph states (2019)
  • Author(s): M. Hayashi and Y. Takeuchi,
  • Journal Title: New Journal of Physics Volume: 21 Pages: 093060-093060
  • DOI: 10.1088/1367-2630/ab3d88
  • Peer Reviewed / Open Access
• [Journal Article] Trainable Projected Gradient Detector for Massive Overloaded MIMO Channels: Data-Driven Tuning Approach (2019)
  • Author(s): Satoshi Takabe, Masayuki Imanishi, Tadashi Wadayama, Ryo Hayakawa, Kazunori Hayashi
  • Journal Title: IEEE Access Volume: 7 Pages: 93326-93338
  • DOI: 10.1109/access.2019.2927997
  • Peer Reviewed / Open Access
• [Journal Article] Skew hook formula for d-complete posets via equivariant K-theory (2019)
  • Author(s): Naruse Hiroshi、Okada Soichi
  • Journal Title: Algebraic Combin. Volume: 2-4 Pages: 541-571
  • DOI: 10.5802/alco.54
  • Peer Reviewed / Open Access
• [Journal Article] Pfaffian formulas and Schur Q-function identities (2019)
  • Author(s): S. Okada
  • Journal Title: Adv. Math. Volume: 353 Pages: 446-470
  • DOI: 10.1016/j.aim.2019.07.006
  • Peer Reviewed
• [Journal Article] Resolving unattainable Cramer-Rao bounds for quantum sensors (2019)
  • Author(s): Masahito Hayashi, Sai Vinjanampathy, and L C Kwek
  • Journal Title: Journal of Physics B: Atomic, Molecular and Optical Physics Volume: 52 Pages: 015503-015503
  • DOI: 10.1088/1361-6455/aaf348
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Universal channel coding for general output alphabet (2019)
  • Author(s): Masahito Hayashi
  • Journal Title: IEEE Transactions on Information Theory Volume: 65 Pages: 302-321
  • DOI: 10.1109/tit.2018.2877456
  • Peer Reviewed
• [Journal Article] Physical Layer Security for RF Satellite Channels in the Finite-Length Regime (2018)
  • Author(s): Vzquez-Castro and Masahito Hayashi
  • Journal Title: IEEE Transactions on Information Forensics and Security Volume: 14 Pages: 981-993
  • DOI: 10.1109/tifs.2018.2868538
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Asymptotic and non-asymptotic analysis for a hidden Markovian process with a quantum hidden system (2018)
  • Author(s): Masahito Hayashi and Yuuya Yoshida
  • Journal Title: Journal of Physics A: Mathematical and Theoretical Volume: 51 Pages: 335304-335304
  • DOI: 10.1088/1751-8121/aacde9
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Compression for quantum population coding (2018)
  • Author(s): Yuxiang Yang, Ge Bai, Giulio Chiribella, and Masahito Hayashi
  • Journal Title: IEEE Transactions on Information Theory Volume: 64 Pages: 4766-4783
  • DOI: 10.1109/tit.2017.2788407
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Self-guaranteed measurement-based blind quantum computation (2018)
  • Author(s): Masahito Hayashi and Michal Hajdusek
  • Journal Title: Physical Review A Volume: 97 Pages: 052308-052308
  • DOI: 10.1103/physreva.97.052308
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Analysis of Remaining Uncertainties and Exponents under Various Conditional Renyi Entropies (2018)
  • Author(s): Vincent Y. F. Tan and Masahito Hayashi
  • Journal Title: IEEE Transactions on Information Theory Volume: 64 Pages: 3734-3755
  • DOI: 10.1109/tit.2018.2792495
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Quantum stopwatch: how to store time in a quantum memory (2018)
  • Author(s): Yuxiang Yang, Giulio Chiribella, and Masahito Hayashi
  • Journal Title: Proc. Royal Society A Volume: 64 Pages: 4766-4783
  • DOI: 10.1098/rspa.2017.0773
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Secure uniform random-number extraction via incoherent strategies (2018)
  • Author(s): Masahito Hayashi and Huangjun Zhu
  • Journal Title: PHYSICAL REVIEW A Volume: 97 Pages: 012302-012302
  • DOI: 10.1103/physreva.97.012302
  • NAID: 120006473501
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Axiomatic and operational connections between the l1-norm of coherence and negativity (2018)
  • Author(s): Huangjun Zhu, Masahito Hayashi,and Lin Chen8
  • Journal Title: PHYSICAL REVIEW A Volume: 97 Pages: 022342-022342
  • DOI: 10.1103/physreva.97.022342
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Universally Fisher-Symmetric Informationally Complete Measurements (2018)
  • Author(s): Huangjun Zhu and Masahito Hayashi
  • Journal Title: PHYSICAL REVIEW LETTERS Volume: 120 Pages: 030404-030404
  • DOI: 10.1103/physrevlett.120.030404
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Single-Shot Secure Quantum Network Coding for General Multiple Unicast Network with Free Public Communication (2017)
  • Author(s): Go Kato, Masaki Owari, and Masahito Hayashi
  • Journal Title: Lecture Notes in Computer Science 166 Volume: 10681 Pages: 166-187
  • DOI: 10.1007/978-3-319-72089-0_10
  • Peer Reviewed
• [Journal Article] Coherence and entanglement measures based on Renyi relative entropies (2017)
  • Author(s): Huangjun Zhu , Masahito Hayashi and Lin Chen
  • Journal Title: Journal of Physics A: Mathematical and Theoretical Volume: 50 Pages: 475303-475303
  • DOI: 10.1088/1751-8121/aa8ffc
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Efficient Verification of Pure Quantum States in the Adversarial Scenario (2020)
  • Author(s): H. Zhu and M. Hayashi
  • Organizer: Quantum Information Processing 2020 (QIP)
  • Int'l Joint Research
• [Presentation] Classical Mechanism is Optimal in Classical-Quantum Differentially Private Mechanisms (2020)
  • Author(s): Y. Yoshida and M. Hayashi
  • Organizer: IEEE International Symposium on Information Theory (ISIT2020)
  • Int'l Joint Research
• [Presentation] Capacity of Quantum Private Information Retrieval with Colluding Servers (2020)
  • Author(s): S. Song and M. Hayashi
  • Organizer: IEEE International Symposium on Information Theory (ISIT2020)
  • Int'l Joint Research
• [Presentation] Permutation Enhances Classical Communication Assisted by Entangled States (2020)
  • Author(s): K. Wang and M. Hayashi
  • Organizer: IEEE International Symposium on Information Theory (ISIT2020)
  • Int'l Joint Research
• [Presentation] Complex Trainable ISTA for Linear and Nonlinear Inverse Problems (2020)
  • Author(s): S. Takabe, T. Wadayama, and Yonina C. Eldar
  • Organizer: IEEE International Conference on Acoustics, Speech, and Signal Processing
  • Int'l Joint Research
• [Presentation] Positivity for symplectic $Q$-functions (2020)
  • Author(s): S. Okada
  • Organizer: AMS Special Session on Interactions between Combinatorics, Representation Theory, and Coding Theory, Joint Mathematics Meetings
  • Int'l Joint Research / Invited
• [Presentation] Verification of Graph state, Hypergraph state, and Weighted graph state (2019)
  • Author(s): M. Hayashi
  • Organizer: Beyond iid Conference
  • Int'l Joint Research
• [Presentation] Verification of commuting quantum computations via fidelity estimation of weighted graph states (2019)
  • Author(s): M. Hayashi
  • Organizer: Mini-Workshop on Quantum Verification
  • Int'l Joint Research / Invited
• [Presentation] Verification of commuting quantum computations via fidelity estimation of weighted graph states (2019)
  • Author(s): M. Hayashi
  • Organizer: Quantum information and string theory 2019
  • Int'l Joint Research / Invited
• [Presentation] Capacity of Quantum Private Information Retrieval with Collusion of All But One of Servers (2019)
  • Author(s): S. Song and M. Hayashi
  • Organizer: IEEE Information Theory Workshop (ITW2019)
  • Int'l Joint Research
• [Presentation] Secrecy and Error Exponents of k-Transmitter Multiple Access Wire-tap Channel (2019)
  • Author(s): M. Hayashi and Y. Chen
  • Organizer: IEEE Information Theory Workshop (ITW2019)
  • Int'l Joint Research
• [Presentation] Asymptotic Analysis on LDPC-BICM Scheme for Compute-and-Forward Relaying (2019)
  • Author(s): S. Takabe, T. Wadayama, and M. Hayashi
  • Organizer: IEEE International Symposium on Information Theory (ISIT2019)
  • Int'l Joint Research
• [Presentation] Capacity of Quantum Private Information Retrieval with Multiple Servers (2019)
  • Author(s): S. Song and M. Hayashi
  • Organizer: IEEE International Symposium on Information Theory (ISIT2019)
  • Int'l Joint Research
• [Presentation] Secure list decoding (2019)
  • Author(s): M. Hayashi
  • Organizer: IEEE International Symposium on Information Theory (ISIT2019)
  • Int'l Joint Research
• [Presentation] Semi-Finite Length Analysis for Secure Random Number Generation (2019)
  • Author(s): M. Hayashi
  • Organizer: IEEE International Symposium on Information Theory (ISIT2019)
  • Int'l Joint Research
• [Presentation] Optimal Mechanism for Randomized Responses under Universally Composable Security Measure (2019)
  • Author(s): Y. Yoshida, M.-H. Yung, and M. Hayashi
  • Organizer: IEEE International Symposium on Information Theory (ISIT2019)
  • Int'l Joint Research
• [Presentation] One-way and Two-way Physical Layer Security Protocols for the Gaussian Satellite Channel (2019)
  • Author(s): A. Vazquez-Castro and M. Hayashi
  • Organizer: 2019 IEEE International Conference on Communications (ICC): SAC Satellite and Space Communications Track - Satellite and Space Communications
  • Int'l Joint Research
• [Presentation] Capacity of Quantum Private Information Retrieval with Multiple Servers (2019)
  • Author(s): S. Song and M. Hayashi
  • Organizer: 19th Asian Quantum Information Science Conference
  • Int'l Joint Research
• [Presentation] Quantifying time-varying sources in magnetoencephalography: A discrete approach (2019)
  • Author(s): Z. Fan, Z. Yao, M. Hayashi, and W. Eddy
  • Organizer: The 3rd International Conference on Econometrics and Statistics (EcoSta 2019)
  • Int'l Joint Research
• [Presentation] Quantum Private Information Retrieval with Multiple Servers (2019)
  • Author(s): M. Hayashi
  • Organizer: The 2019 Workshop on Probability and Information Theory (WPI 2019)
  • Int'l Joint Research / Invited
• [Presentation] Secure Quantum Network Code without Classical Communication (2019)
  • Author(s): M. Hayashi
  • Organizer: Summer Workshop on Quantum Algorithm and Quantum Software
  • Int'l Joint Research / Invited
• [Presentation] Perfect Discrimination of Non-Orthogonal Separable Pure States on Bipartite System in General Probabilistic Theory (2019)
  • Author(s): M. Hayashi
  • Organizer: Interactions between Noncommutative Analysis and Quantum Information Theory
  • Int'l Joint Research
• [Presentation] Asymptotic decoupling property and mixing condition and Hidden Markovian Process in quantum system (2019)
  • Author(s): M. Hayashi
  • Organizer: Mathematical Aspects in Current Quantum Information Theory 2019 (MAQIT 2019)
  • Int'l Joint Research
• [Presentation] Finite-length security analysis in quantum key distribution (2019)
  • Author(s): M. Hayashi
  • Organizer: 2019 Annual meeting for quantum information of the Chinese Institute of Electronics
  • Int'l Joint Research
• [Presentation] セキュア量子ネットワーク符号 (2019)
  • Author(s): 加藤豪, 尾張正樹, 林正人
  • Organizer: 第40回量子情報技術研究会 (QIT40)
• [Presentation] Capacity of Quantum Private Information Retrieval with Multiple Servers (2019)
  • Author(s): Seunghoan Song and Masahito Hayashi
  • Organizer: 第40回量子情報技術研究会 (QIT40)
• [Presentation] Perfect Discrimination of Non-Orthogonal Separable States in General Probabilistic Theory (2019)
  • Author(s): Hayato Arai・Yuuya Yoshida・Masahito Hayashi
  • Organizer: 第40回量子情報技術研究会 (QIT40)
• [Presentation] Capacity of Quantum Private Information Retrieval with Collusion of All But One of Servers (2019)
  • Author(s): Seunghoan Song and Masahito Hayashi
  • Organizer: 第41回量子情報技術研究会 (QIT41)
• [Presentation] Positivity for symplectic $Q$-functions (2019)
  • Author(s): S. Okada
  • Organizer: 82th Seminaire Lotharingien de Combinatoire
  • Int'l Joint Research / Invited
• [Presentation] Generalization of Schur's $Q$-functions (2019)
  • Author(s): S. Okada
  • Organizer: New Interactions between Geometry and Combinatorics
  • Int'l Joint Research / Invited
• [Presentation] 計算-転送方式におけるLDPC符号化変調方式の漸近性能解析 (2019)
  • Author(s): 高邉 賢史，和田山 正， 林 正人
  • Organizer: 第3回情報理論および符号理論とその応用ワークショップ
• [Presentation] Secure physical layer network coding versus secure network coding (2018)
  • Author(s): Masahito Hayashi
  • Organizer: IEEE Information Theory Workshop 2018
  • Int'l Joint Research / Invited
• [Presentation] Secure Quantum Network Code without Classical Communication (2018)
  • Author(s): Seunghoan Song and Masahito Hayashi
  • Organizer: IEEE Information Theory Workshop 2018
  • Int'l Joint Research
• [Presentation] Secure Computation-and-Forward with Linear Codes (2018)
  • Author(s): Masahito Hayashi, Tadashi Wadayama, Angeles Vazquez-Castro
  • Organizer: IEEE Information Theory Workshop 2018
  • Int'l Joint Research
• [Presentation] Quantum Network Code for Multiple-Unicast Network with Quantum Invertible Linear Operations (2018)
  • Author(s): Seunghoan Song and Masahito Hayashi
  • Organizer: 13th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2018)
  • Int'l Joint Research
• [Presentation] Compression for qubit clocks (2018)
  • Author(s): Yuxiang Yang, Giulio Chiribella, and Masahito Hayashi
  • Organizer: IEEE International Symposium on Information Theory (ISIT2018)
  • Int'l Joint Research
• [Presentation] Universal Construction of Cheater-Identifiable Secret Sharing Against Rushing Cheaters Based on Message Authentication (2018)
  • Author(s): Masahito Hayashi and Takeshi Koshiba
  • Organizer: IEEE International Symposium on Information Theory (ISIT2018)
  • Int'l Joint Research
• [Presentation] Secure communication over fully quantum Gel'fand-Pinsker wiretap channel (2018)
  • Author(s): Anurag Anshu, Masahito Hayashi, and Naqueeb Ahmad Warsi
  • Organizer: IEEE International Symposium on Information Theory (ISIT2018)
  • Int'l Joint Research
• [Presentation] Asymptotically Decoupling and Mixing Properties in Quantum System (2018)
  • Author(s): Yuuya Yoshida and Masahito Hayashi
  • Organizer: IEEE International Symposium on Information Theory (ISIT2018)
  • Int'l Joint Research
• [Presentation] Asymptotic Analysis on Spatial Coupling Coding for Two-Way Relay Channels (2018)
  • Author(s): Satoshi Takabe, Yuta Ishimatsu, Tadashi Wadayama, and Masahito Hayashi
  • Organizer: IEEE International Symposium on Information Theory (ISIT2018)
  • Int'l Joint Research
• [Presentation] Universally Fisher-symmetric informationally complete measurements (2018)
  • Author(s): H. Zhu and M. Hayashi
  • Organizer: 18th Asian Quantum Information Science Conference
  • Int'l Joint Research
• [Presentation] Attaining the ultimate precision limit in quantum state estimation (2018)
  • Author(s): Yuxiang Yang, Giulio Chiribella, and Masahito Hayashi
  • Organizer: 18th Asian Quantum Information Science Conference
  • Int'l Joint Research
• [Presentation] Measurement-Based Quantum Computation and Its Verification (2018)
  • Author(s): Masahito Hayashi
  • Organizer: Second Hong Kong-Shenzhen Workshop on Quantum Information Science
  • Int'l Joint Research / Invited
• [Presentation] Quantum stopwatch: How to store time in a quantum memory (2018)
  • Author(s): Masahito Hayashi
  • Organizer: Wolfson - SUSTech meeting
  • Int'l Joint Research / Invited
• [Presentation] Verification of Measurement-Based Quantum Computation (2018)
  • Author(s): Masahito Hayashi
  • Organizer: AQIS2018 Kyoto satellite workshop on quantum computing
  • Int'l Joint Research / Invited
• [Presentation] Attaining the ultimate precision limit in quantum state estimation (2018)
  • Author(s): Masahito Hayashi
  • Organizer: International Workshop on Quantum Tomography (IWQT)
  • Int'l Joint Research / Invited
• [Presentation] Attaining the ultimate precision limit in quantum state estimation (2018)
  • Author(s): Masahito Hayashi
  • Organizer: Hong Kong-Shenzhen Workshop on Quantum Information Science
  • Int'l Joint Research / Invited
• [Presentation] 双方向リレー通信路における空間結合LDPC符号の漸近解析 (2018)
  • Author(s): 高邉 賢史，和田山 正， 林 正人
  • Organizer: 電子情報通信学会情報理論研究会
• [Presentation] 量子系におけるTP-CP写像の漸近的decouplingと混合性 (2018)
  • Author(s): 吉田裕哉，林 正人
  • Organizer: 第38回量子情報技術研究会 (QIT38)
• [Presentation] Secure Quantum Network Code without Classical Communication (2018)
  • Author(s): Seunghoan Song and Masahito Hayashi
  • Organizer: 第38回量子情報技術研究会 (QIT38)
• [Presentation] パウリX, Z測定によるハイパーグラフ状態の量子計算万能性 (2018)
  • Author(s): 竹内勇貴,森前智行,林正人
  • Organizer: 第38回量子情報技術研究会 (QIT38)
• [Presentation] 計算-転送方式のためのQPSK/8PSKを使用したBICM-LDPC符号の漸近性能解析 (2018)
  • Author(s): 高邉 賢史，和田山 正， 林 正人
  • Organizer: 第41 回情報理論とその応用シンポジウム
• [Presentation] 双方向リレー通信路における空間結合LDPC符号の漸近解析 (2018)
  • Author(s): 高邉 賢史，和田山 正， 林 正人
  • Organizer: 通信ソサイエティ 革新的無線通信技術に関する横断型研究会(MIKA)
• [Presentation] Compression for identically prepared qudit states, (2018)
  • Author(s): Y. Yang, G. Bai, G. Chiribella, and M. Hayashi
  • Organizer: Quantum Information Processsing (QIP 2018).
  • Int'l Joint Research
• [Presentation] Secure wireless communication and its application to satellite communication (2018)
  • Author(s): M. Hayashi
  • Organizer: Japan-Singapore Workshop on Coding and Information Theory
  • Int'l Joint Research
• [Presentation] 双方向リレー通信路におけるLDPC 符号の漸近性能解析 (2018)
  • Author(s): 石松佑太, 高邉賢史, 和田山正, 林正人
  • Organizer: 電 子情報通信学会情報理論研究会
• [Presentation] Asymptotic decoupling property and mixing condition and Hidden Markovian Pro- cess in quantum system (2018)
  • Author(s): M. Hayashi
  • Organizer: Hong Kong Workshop on Quantum Information Foundations: Focus on Physics of the Observer
  • Int'l Joint Research / Invited
• [Presentation] Secure wireless communication under spatial and local Gaussian noise assumptions (2017)
  • Author(s): M. Hayashi
  • Organizer: 10th International Conference on Information Theoretic Security (ICITS2017) Workshop Track
  • Int'l Joint Research
• [Presentation] Secrecy and Robustness for Active Attack in Secure Network Coding and its Application to Network Quantum Key Distribution (2017)
  • Author(s): M. Hayashi, M. Owari, G. Kato, and N. Cai
  • Organizer: 10th International Conference on Information Theoretic Security (ICITS2017) Workshop Track
  • Int'l Joint Research
• [Presentation] Information-theoretic Physical Layer Security for Satellite Channels (2017)
  • Author(s): A. Vazquez-Castro and M. Hayashi
  • Organizer: 10th International Conference on Information Theoretic Security (ICITS2017) Workshop Track
  • Int'l Joint Research
• [Presentation] Asymptotic Analysis for Hidden Markovian Process with Quantum Hidden System (2017)
  • Author(s): M. Hayashi
  • Organizer: 2017 IEEE Information Theory Workshop
  • Int'l Joint Research / Invited
• [Presentation] 量子情報おける精度保証 (2017)
  • Author(s): 林正人
  • Organizer: IEEE Fellow 受賞記念講演
  • Invited
• [Presentation] Verication of Measurement-Based Quantum Computation (2017)
  • Author(s): M. Hayashi
  • Organizer: IHP conference on Quantum Information Theory
  • Int'l Joint Research / Invited
• [Presentation] Role of Hypothesis Testing in Quantum Information Theory (2017)
  • Author(s): M. Hayashi
  • Organizer: Asian Conference on Quantum Information Science (AQIS 17)
  • Int'l Joint Research / Invited
• [Presentation] 非正則LDPC符号に対するメッセージパッシングアルゴリズムに基づくニューラルネットワーク復号器 (2017)
  • Author(s): 福本真也，和田山正
  • Organizer: 第40回情報理論とその応用シンポジウム (SITA)