Researcher Information

• College of Engineering/Department of Software Science/Professor

Academic Background

• Keio University/Graduate School, Division of Science and Engineering/電気工学専攻/1990/03/Completion/Doctor of Engineering
• Keio University/Faculty of Science and Technology/Department of Electronics/1985/03/Graduation

Career

• 2008/04/～/玉川大学
• 2006/04/～/2008/03/Tamagawa Academy/Department of Media-Network Sciences, College of Engineering/Professor
• 1997/04/～/2006/03/Tamagawa Academy/Department of Information Communication Engineering/Associate professor
• 1991/04/～/1997/03/Tamagawa Academy/Department of Information Communication Engineering/Parmanent lecturer
• 1990/04/～/1991/03/Tamagawa Academy/Department of Information Communication Engineering　Faculty of Engineering/Assistant professor

Field of Research

• Communication and network engineering/Optical communication systems and equipment,Communication theory,Quantum Cryptography

Research Keyword

License

Academic Thesis

• Reduction of Communication Rounds in Cascade Protocol Using Block Codes and Parallel Processing/Hiroaki Ogiso and Koichi Yamazaki/2025/05
• A Study on Reduction of the Number of Communications for Cascade Protocol/Takumi Fukushima and Koichi Yamazaki/2024/04
• A study on Detection System of Backscatter due to DDoS Attack/Tonan Kurihara and Koichi Yamazaki/2021/04
• Visualization of packet communication/Kowa Utashiro and Koichi Yamazaki/2019/04
• Optimization of Secret-Key Reconciliation Protocol Cascade with Parallel Procedure/Takeshi Odato and Koichi Yamazaki/2018/04

MISC

• 秘密鍵系列の一致プロトコルCascadeの高速化/基礎・境界/A-6-6/2011
• Yuen-Kim暗号鍵配送方式に関する一考察―受信者の誤り率に制限を加えたときの鍵生成速度/A/46180/169/2005

Bibliography

• Squeezed Light/ELSEVIER/1992/Multiple author
• -/1990/Multiple author

Conference

Works

Competitive research funds

• A study on an amplifiable quantum key distribution system using intense coherent state signal.
• A study on error correcting codes for secret key reconciliation.
• A study on an amplifiable quantum key distribution system using intense coherent state signal.
• Development of public channel protocol for quantum key distribution.
• Secret key distribution based on optical communication technology/Individual

Patents

• Patent Right/情報通信における対話方式の誤り訂正法/特願2001-346340/特許第3949937号/2001/11/12

Academic Society and Social Activity

• The Institute of Electrical and Electronics Engineers/Other
• The Society of Inforamtion Theory and Its Applications/Japan/2002/～/2004
• -/Japan/2001/～/2005
• The Society of Inforamtion Theory and Its Applications/Japan/2001/～/2002
• -/Japan/1997/～/1999

Committee Career

• Dean/2022/～ Present
• 工学部教務主任/2016/～/2022
• 工学部ソフトウェアサイエンス学科主任/2012/～/2016
• 工学部学生主任代理/2002/～/2004

Reward

Social Contribution

• 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/2017/04/01
• 回路基礎‐定理：苦痛から必要性を考えさせる/2014/04/01
• 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/2013/04/01

Media Coverage

Academic contribution

Other

• 海外研究活動/2004/04
• 海外研究活動/2001/04

Example of Education Method

• 2021/04/01/・Provision of lecture videos for courses taught

Created Textbooks

Other

• 2002/ゼミ旅行　通信システム工学研究室ゼミ合宿

Teaching　Experiences

Course taught (Course for regular students)

• 2025/Spring semester/卒業研究/学科科目
• 2025/Spring semester/卒業研究 (1ｾﾒｽﾀｰ目)/学科科目
• 2025/Spring semester/工学基礎 A/学科科目
• 2025/Spring semester/情報理論/学科科目
• 2025/Spring semester/情報ｾｷｭﾘﾃｨ/学科科目

Course taught (Course for correspondence students)

Other subjects

Practical experience at school sites

Special Instructions About Experienced Worker