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Basic information
Name
YAMAZAKI Koichi
BASIC INFO
Teacher Information
***
RESEARCHER BASIC DATA
PROFILE
My current research interest is to develop unconditionally secure cryptosystems. For this purpose, we propose a crypto key distribution scheme using intense laser pulse. I also investigate error correction methods which play important role for the key distribution system.
Affiliation
Tamagawa University College of Engineering Department of Software Science
Title
Professor
Other affiliations
ACADEMIC DEGREES
Doctor of Engineering Keio University 2000-03-31
Area of research
Communication/Network engineering Optical communication systems and equipment,Communication theory,Quantum Cryptography
Research project
A study on an amplifiable quantum key distribution system using intense coherent state signal.
A study on an amplifiable quantum key distribution system using intense coherent state signal.
Development of public channel protocol for quantum key distribution.
A study on error correcting codes for secret key reconciliation.
Secret key distribution based on optical communication technology Individual
Biographical information
2006-04-01 ～ 2008-03 Tamagawa Academy Department of Media-Network Sciences, College of Engineering Professor
1997-04-01 ～ 2006-03-31 Tamagawa Academy Department of Information Communication Engineering Associate professor
1991-04-01 ～ 1997-03-31 Tamagawa Academy Department of Information Communication Engineering Parmanent lecturer
1990-04-01 ～ 1991-03-31 Tamagawa Academy Department of Information Communication Engineering Faculty of Engineering Assistant professor
Graduate School attended
Keio University Completed 1990-03-31
University attended
Keio University Faculty of Science and Technology Department of Electronics 1985-03-31 Graduated
Teaching qualification / certification
RESEARCH ACTIVITY DATA
Affiliated academic society
The Institute of Electrical and Electronics Engineers
The Society of Inforamtion Theory and Its Applications 2002 ～ Present
The Society of Inforamtion Theory and Its Applications 2002 ～ Present
- 2001 ～ Present
- 1997 ～ Present
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- 1995 ～ Present
The Society of Inforamtion Theory and Its Applications 1991 ～ 1995
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Record of committee membership
Academic prizes awarded
Research achievements (PUBLICATIONS)
Properties of Secret-Key Reconciliation Protocol“ Cascade ”with Parallel Processing Proc. of 2016 RISP Int'l Workshop on Nonliner Circuits, Commun. and Signal Processing Takeshi Odato and Koichi Yamazaki 2016
Properties of A Special Type of Coherent Pulse Position Modulation Signal-Part II Proc. of 2011 RISP Int'l Workshop on Nonliner Circuits, Commun. and Signal Processing Takashi Furuya and Koihci Yamazaki 2011
Properties of Slot-Energy-Constant Coherent Pulse Position Modulation Signal - Takashi Furuya, Masao Osaki and Koihci Yamazaki 2011
A Property of A Special Type of Coherent Pulse Position Modulation Signal Proc. of 2010 RISP Int'l Workshop on Nonlinear Circuit, Commun. and Signal Processing Takashi Furuya and Koihci Yamazaki 2010
Properties of Yuen-Kim Key Distribution Scheme with Amplifier Proc. of 2009 RISP Int'l Workshop on Nonlinear Circuit and Signal Processing Toshiki Matsuoka and Koichi Yamazaki 2009
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Properties of Cascade Protocol using Perfect Single-Error-Correcting Code Proc. of 2008 RISP Int'l Workshop on Nonlinear Circuit and Signal Processing Koichi Yamazaki 2008
Perfect Single-Error-Correcting Binary Code for Interactive Secret Key Reconciliation Proceedings of 2006 International Symposium on Information Theory and its Applications Koichi Yamazaki 2006
Problems of the Cascade Protocol and its Application to Classical and Quantum Key Generation Proc. of the 8th Int'l Conf. of Quantum Communication, Measurement and Computation K. Yamazaki, R. Nair and H. P. Yuen 2006
Eavesdropping on Key Distribution Scheme based on Shot Noise of Intense Laser Pulses Proceedings of The 7th Int'l Conference on Quantum Communication, Measurement and Computing. Kouichi Yamazaki (eds. S. M. Barnett, et al.) 2004
Interference of the correlation by beam splitting in YK protocol QKD system Proceedings of The 7th Int'l Conference on Quantum Communication, Measurement and Computing Masao Osaki, Kouichi Yamazaki and Masashi Ban (eds. S. M. Barnett, et al.) 2004
High Rate Secret Key Distribution Scheme based on Shot Noise of Intense Laser Pulses Proceedings of 2004 Int'l Symposium on Information Theory and its Applications Kouichi Yamazaki 2004
Application of Existing Perfect Code to Secret Key Reconciliation Conf. Proc. of Int. Symp. on Commun. and Inform. Thech. Eisaku Furukawa and Kouichi Yamazaki 2001
Improvement of key rate for Yuen-Kim Cryptoscheme Quantum Communication, Computing, and Measurement 3 (Eds. P. Tombesi and O Hirota) 2001
On secret key reconciliation protocol. -Modification of Cascade protocol - Proc. of 2000 Int'l Symp. on Inform. Theory and Its Applications, Hawaii Kouichi Yamazaki and Tomohiro Sugimoto 2000
A Study on Secret Key Reconciliation Protocol `` Cascade'' IEICE Trans. T. Sugimoto and K. Yamazaki 2000
On a sequential measurement of M-ary orthogonal quantum signal.-Approach to implementing an optimum receiver Proc. of 1998 IEEE Int'l Symp. on Inform. Theory Masahito Kato and Kouichi Yamazaki 1998
On a sub-optimum detection scheme of M-ary Pulse Position Modulation signal Conf. Proc. of 1998 Int'l Symp. on Inform. Theory and Its Applications Masahito Kato and Kouichi Yamazaki 1998
On reconciliation of discrepant sequences shared through quantum mechanical channels Lecture Notes in Computer Science K. Yamazaki, M. Osaki and O. Hirota, (eds. E. Okamoto, G. Davida and M. Mambo) 1998
Accessible information in combined and sequential quantum measurements on binary-state signal Phys. Rev. M. Ban, K. Yamazaki and O. Hirota 1997
Properties of Quantum Cryptography Based on Orthogonal States : Goldenberg & Vaidman scheme Quantum Communication Computing, and Measurement K. Yamazaki, T. Matsui and O. Hirota, (eds. O. Hirota, A.S.Holevo and C.M.Caves) 1997
On a new detection scheme for M-ary orthogonal coherent state signal NASA Conf. Publishing 3322 (Fourth Int. Conf. on Squeezed State and Uncertainty Relations) K. Yamazaki, 1996
On a new detection scheme of optical PPM signal Proc. of 1995 IEEE Int'l Symp. on Inform. Theory K. Yamazaki 1995
Quasi-optimum Quantum Receiver for Squeezed-state signa Conf. Proc. of 1994 Int'l Symp. on Inform. Theory and Its Applications K. Yamazaki 1994
Signal-to-noise ratio of optical system consisting of squeezer and optical Kerr medium J. Modern Optics T. S. Usuda, T. Satoh, K. Yamazaki and O. Hirota 1994
Elimination of nonlinear PM and FM noise in optical amplifier repeater systems by squeezer Proc. of Int. Conf. on Multigigabit Fiber Communication Systems T. Sasaki, T Satoh, N. Ubayama, K. Yamazaki, and O. Hirota 1993
On the error correcting code for noisy interleaved optical PPM channel Conf. Proc. of 1992 Int'l Symp. on Inform. Theory and Its Applications K. Yamazaki and C. Tsuchihashi 1992
Transformation formulae for quantum noise in phase space Conf. Proc. of 1992 Int'l Symp. on Inform. Theory and Its Applications H. Higashiyama, K. Yamazaki and O. Hirota 1992
A quantum theoretical analysis of nonlinear phase noise Conf. Proc. of 1992 Int'l Symp. on Inform. Theory and Its Applications T. Satoh, K. Yamazaki, O. Hirota and N. Ubayama 1992
Application of New Photodetection Process to Quantum Communication IEICE Trans. Fundamentals Kouichi YAMAZAKI 1992
On a feasibility of quasi-optimum quantum receiver for M-ary coherent-state signal Quantum Aspects of Optical Communications K. Yamazaki, (eds. C.Bendjaballah, et.al) 1991
Properties of Photon Distribution of Squeezed State in Loss Channel IEICE Transaction Seitetsu BUN, Kazushige YONENAGA and Kouichi YAMAZAKI 1991
Properties of Photon Counting System with Squeezed State Signal in Loss Channel IEICE Transaction Seitetsu BUN, Kouichi YAMAZAKI, Osamu HIROTA and Masao NAKAGAWA 1989
Effect of Asymmetric Error Correcting Codes in Photon Communication Systems IEICE Transaction Tomohiko UYEMATSU, Kouichi YAMAZAKI, Osamu HIROTA, Masao NAKAGAWA and Kohichi SAKANIWA 1988
Optimum Condition of Squeezed State Signal for Optical Communication with Energy Loss IEICE Transaction Kouichi YAMAZAKI, Osamu HIROTA and Masao NAKAGAWA 1988
Comparison between Photon Communication Systems and Quantum Coherent Communication Systems IEICE Transaction Kouichi YAMAZAKI, Osamu HIROTA and Masao NAKAGAWA 1987
Effect of Error Correcting Code in Photon Communications with Energy Loss IEICE Transaction Kouichi YAMAZAKI, Osamu HIROTA and Masao NAKAGAWA 1987
Properties of Cutoff Rate for Photon Channels IEICE Transaction Osamu HIROTA, Kouichi YAMAZAKI, Yota ENDO, Masao NAKAGAWA and Mikio TAKAHARA 1987
Properties of Error Correcting Code Using Photon Pulse IEICE Transaction Osamu HIROTA, Kouichi YAMAZAKI, Masao NAKAGAWA and Masanori OHYA 1986
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Research achievements (PUBLICATIONS/REVIEWS (Misc))
Research achievements (BOOKS)
Squeezed Light ELSEVIER 1992 Co-author
- 1990 Co-author
Research achievements (Lectures, oral presentations, posters, etc.)
Research achievements (Other)
Research achievements (Patents)
Overseas research
Overseas research activities
2004
2001
Acceptance of special research students
EDUCATION/COMMUNITY ACTIVITIES DATA
Courses you have taught (To be displayed on Researchmap)
Course taught (Course for regular students)
2024 1 ﾌﾟﾛｼﾞｪｸﾄ研究 A 0 学科科目 演習 工 70
2024 1 輪講 A 0 学科科目 演習 工 60
2024 1 卒業研究 (1ｾﾒｽﾀｰ目) 0 学科科目 演習 工 57
2024 1 卒業研究 0 学科科目 演習 工 6
2024 1 情報ｾｷｭﾘﾃｨ概論 Monday 12 院科目 大学院 工 4
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2024 1 情報ｾｷｭﾘﾃｨ Wednesday 12 学科科目 講義 工 36
2024 1 工学基礎 A Thursday 12 学科科目 講義 工 21
2024 1 情報理論 Thursday 34 学科科目 講義 工 57
2023 1 輪講 A 0 学科科目 演習 工 51
2023 1 輪講 0 学科科目 演習 工 3
2023 1 ﾌﾟﾛｼﾞｪｸﾄ研究 A 0 学科科目 演習 工 68
2023 1 卒業研究 (1ｾﾒｽﾀｰ目) 0 学科科目 演習 工 55
2023 1 情報ｾｷｭﾘﾃｨ概論 Monday 78 院科目 大学院 工 5
2023 1 情報ｾｷｭﾘﾃｨ Wednesday 12 学科科目 講義 工 73
2023 1 工学基礎 A Thursday 12 学科科目 講義 工 11
2023 1 情報理論 Thursday 34 学科科目 講義 工 43
2023 2 ﾌﾟﾛｼﾞｪｸﾄ研究 B 0 学科科目 演習 工 61
2023 2 輪講 B 0 学科科目 演習 工 51
2023 2 卒業研究 (1ｾﾒｽﾀｰ目) 0 学科科目 演習 工 3
2023 2 卒業研究 0 学科科目 演習 工 56
2023 2 ﾓﾊﾞｲﾙｼｽﾃﾑ総合研究 0 学科科目 講義 工 16
2023 2 情報ｾｷｭﾘﾃｨ対策 0 院科目 大学院 工 3
2023 2 暗号と符号理論 Wednesday 12 院科目 大学院 工 1
2023 2 回路基礎 Thursday 12 学科科目 講義 工 42
2023 2 ｼｽﾃﾑﾌﾟﾛｸﾞﾗﾐﾝｸﾞ Friday 56 学科科目 講義 工 58
2022 1 輪講 0 学科科目 演習 工 61
2022 1 輪講 0 学科科目 演習 工 1
2022 1 卒業研究 (1ｾﾒｽﾀｰ目) 0 学科科目 演習 工 54
2022 1 卒業研究 (1ｾﾒｽﾀｰ目) 0 学科科目 演習 工 1
2022 1 ﾌﾟﾛｼﾞｪｸﾄ研究 A 0 学科科目 演習 工 62
2022 1 卒業研究 0 学科科目 演習 工 8
2022 1 情報ｾｷｭﾘﾃｨ概論 Monday 34 院科目 大学院 工 4
2022 1 暗号と符号理論 Monday 78 院科目 大学院 工 2
2022 1 情報ｾｷｭﾘﾃｨ Wednesday 12 学科科目 講義 工 52
2022 1 情報ｾｷｭﾘﾃｨ Wednesday 12 学科科目 講義 工 6
2022 1 工学基礎 A Thursday 12 学科科目 講義 工 18
2022 1 工学基礎演習 Thursday 12 学科科目 演習 工 1
2022 1 情報理論 Thursday 34 学科科目 講義 工 47
2022 1 情報理論 Thursday 34 学科科目 講義 工 1
2022 2 ﾌﾟﾛｼﾞｪｸﾄ研究 B 0 学科科目 演習 工 60
2022 2 ﾌﾟﾛｼﾞｪｸﾄ研究 0 学科科目 演習 工 1
2022 2 卒業研究 0 学科科目 演習 工 54
2022 2 卒業研究 0 学科科目 演習 工 3
2022 2 回路基礎 Monday 78 学科科目 講義 工 67
2022 2 ｼｽﾃﾑﾌﾟﾛｸﾞﾗﾐﾝｸﾞ Friday 56 学科科目 講義 工 63
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Course taught (Course for correspondence students)
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Presentations / Lectures
2017 For on-campus 工学部共同研究：ネットワークセキュリティ教育システムの開発
2014 For on-campus 回路基礎‐定理：苦痛から必要性を考えさせる
2013 For on-campus 工学部共同研究：モバイル端末によるクラウド型基礎教育支援システムの開発
Involvements with student field work / Study trips
2002 Seminar Travel 通信システム工学研究室ゼミ合宿 工学部情報通信工学科通信システム工学研究室の4年生，大学院生（山崎担当文） 6 2002 ～ Present
Extracurricular activities, etc.
2016 Committee activities in campus and various administrative activities 工学部教務主任（2016~）
2012 Committee activities in campus and various administrative activities 工学部ソフトウェアサイエンス学科主任（2012-2016）
2002 Committee activities in campus and various administrative activities 工学部学生主任代理(2002-2004)
COMMUNITY ACTIVITIES
SOCIAL CONTRIBUTION ACTIVITIES
Achievements in fine arts / sports
