Meet Our Team

• #Quantum Technology

Hiroshi Yamauchi

• Profile
  Graduated from the Electronic Engineering Program at The University of Electro-Communications in 1999. Worked at KDD Laboratory and KDD Submarine Cable Systems Inc., engaging in research on long-haul optical WDM transmission systems and development of commercial systems such as Japan-US, TAT-14, SMW3, and Japan Information Highway. Joined SoftBank Corp. in 2006, working on the development of commercial network operation systems for enterprise network services, SmartVPN and SmartInternet, as well as research on robust network operation systems using machine learning. Currently engaged in research on quantum artificial intelligence and distributed quantum computer networks.
  Researcher of Keio University Quantum Computing Center.
  Member of the IEICE, expert member of ITU-T SG13, TTC.
  Google Scholar
• Research area
  • Research on Quantum Artificial Intelligence
  • Research on Distributed Quantum Computer Networks
• Major publications / papers
  • Hiroshi Yamauchi, Tomah Sogabe, Rodney Van Meter, “Parametrized Energy-Efficient Quantum Kernels for Network Service Fault Diagnosis,” IEEE Quantum Computing and Engineering, 2024
  • Shu Kanno, Kenji Sugisaki, Hajime Nakamura, Hiroshi Yamauchi, Rei Sakuma, Takao Kobayashi, Qi Gao, Naoki Yamamoto, “Tensor-based quantum phase difference estimation for large-scale demonstration,” arXiv.2408.04946, 2024
  • Hiroshi Yamauchi, Tatsuaki Kimura, “Deep Reinforcement Learning based Command Control System for Automating Fault Diagnosis,” IEEE/IFIP CNSM, 2023
  • Hiroshi Yamauchi, Tatsuaki Kimura, “Machine Learning based Automatic Command Control System for Fault Diagnosis of Communication Services,” IEICE Technical Report, vol. 121, no. 102, NS2021-56, pp. 124-128
  • Y. Takushima, H. Yoshimi, Y. Ozeki, K. Kikuchi, H. Yamauchi, H. Taga,“ In-service dispersion monitor in 32/spl times/10.7 Gbps WDM transmission system over trans-Atlantic distance by optical frequency-modulation method”, OFC, 2003, PD13-P1
  • Hiroshi Yamauchi, Shuai Cui, Takahiro Kinoshita, Tsuyoshi Sudo, Yasuyuki Nakatsuji, “Improving the accuracy of communication service monitoring systems,” IEICE Com. Conf. , 2021, B-6-12
  • Hiroshi Yamauchi, Yasuyuki Nakatsuji, “Development of Application Programming Interface for Line Survey Function Utilizing the Distributed Asynchronous Microservices Architecture,” IEICE Gen. Conf. , 2019, B-6-31
  • Y. Takushima, H. Yoshimi, Y. Ozeki, K. Kikuchi, H. Yamauchi, H. Taga, “In-service dispersion monitor in 32/spl times/10.7 Gbps WDM transmission system over trans-Atlantic distance by optical frequency-modulation method,” OFC, 2003, PD13-P1
  • H. Yamauchi, E. Shibano, H. Taga, K. Goto, “Modulation Format Comparison Between Chirped-RZ and Chirped-NRZ in 37.5GHz Spaced 32 × 11.4Gbit/s Long-haul WDM Transmission Using Non-zero Dispersion Shifted Fibre Span,” ECOC, 2002, P3-23v
  • Hidenori Taga, Hiroshi Yamauchi, Takanori Inoue, Koji Goto, Noboru Edagawa, and Masatoshi Suzuki, “Performance improvement of highly nonlinear long-distance optical fiber transmission system using novel high gain forward error correcting code,” OFC, 2001, TuF3
  • T Tsuritani, N Takeda, K Imai, K Tanaka, A Agata, I Morita, H Yamauchi, N Edagawa, M Suzuki, ”1 Tbit/s (100×10.7Gbit/s) transoceanic transmission using 30 nm-wide broadband optical repeaters with Aeff-enlarged positive fibre and slope-compensating DCF,” ECOC, 1999, p. 38–39, Post Deadline paper
• Major achievements
  • Demonstration Experiment of a Communication Service Fault Diagnosis System Using Quantum Machine Learning
  • SoftBank Corp. and The University of Tokyo Launch Joint Research Collaboration towards the Societal Implementation of Quantum Computing via the Quantum Innovation Initiative Consortium
  • SoftBank Corp. Launches Joint Research with Keio University with View to Business Utilization of Quantum Computers
  • Development of the integrated operation system 'TRIOS' for SoftBank's network services 'SmartVPN' and 'SmartInternet,' covering service fault diagnosis, public API, and service status monitoring notifications
  • Development of commercial optical submarine cable systems such as 'Japan-USCN,' 'TAT-14CN,' 'PC-1,' 'SMW3,' 'C2C,' 'EAC,' and 'Japan Information Highway'
  • Experiments with optical loop transmission testbeds for transoceanic optical WDM transmission, and system design through computer simulations of optical transmission using the nonlinear Schrödinger equation, rate equations for rare-earth-doped optical fiber amplifiers
• Hobbies and Ways of Spending Free Time
  Baseball(fastpitch softball), sound recording, Jeep, mountaineering, walking my beloved dog.
• Origin/Upbringing
  Born in Chikushino City, Fukuoka Prefecture.
• What I Value in Research
  "Patience, persistence, and perspiration make an unbeatable combination for success." – Thomas Edison