- 2018 - 現在 Mext Quantum Leap Flagship Program (MEXT Q-LEAP), advisory board
- 2018 - 現在 JST CREST [Computational Foundation] Technology for Computing Revolution for Society 5.0., research area advisor
- 2012 - 現在 AMS Mathematical Reviews, reviewer
- 2024 - Asian Quantum Information Science Conference (AQIS 2024) Program Committee Chair
- 2023 - 2023 Asian Quantum Information Science Conference (AQIS 2023) Program Committee
- 2022/04 - 2022/12 The International Symposium on Quantum Science, Technology and Innovation (Quantum Innovation 2022) Organizing Committee
- 2021/04 - 2021/12 The International Symposium on Quantum Science, Technology and Innovation (Quantum Innovation 2021) Organizing Committee
- 2015 - 2021/05 The Institute of Electronics, Information and Communication Engineers (IEICE), technical committee on Theoretical Foundations of Computing (COMP)
- 2016 - 2021/03 JST PREST Quantum state control and functionalization, research area advisor
- 2021 - 2021 21th Asian Quantum Information Science Conference (AQIS 2021) Program Committee
- 2018 - 2018 Asian Quantum Information Science Conference (AQIS 2018), program committee
- 2012 - 2018 Information Processing Society of Japan (IPSJ) Review Committee of IPSJ Journal
- 2016 - 2016 Asian Quantum Information Science Conference (AQIS 2016) program committee
- 2008 - 2012 Information Processing Society of Japan (IPSJ), editorial committee of IPSJ Journal
- 2010 - 2010 Conference on the Theory of Quantum Computation, Communication, and Cryptography (TQC 2010), program committee
- 2005 - 2009 Information Processing Society of Japan (IPSJ), steering committee of Special Interest Group on Algorithms (SIGAL)
- 2009 - The Institute of Electronics, Information and Communication Engineers (IEICE), Guest Editor-in-Chief of Special Section “Frontier of Quantum Computing”, IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sceinces, Vol. E92-A, No.5, 2009.
- 2005 - Information Processing Society of Japan (IPSJ), Guest Editor-in-Chief of Special Issue on Quantum Computation and Information, IPSJ Journal, Vol.46, No.10, 2005.
- 2002 - 2004 The Institute of Electronics, Information and Communication Engineers (IEICE), editorial committee on the Journal of IEICE (WG A)