Fellows
/Senior Distinguished
Researchers
/Distinguished
Researchers

Selected papers

• Koji Azuma, Sathyawageeswar Subramanian, and Go Kato "Do black holes store negative entropy?," Progress of Theoretical and Experimental Physics 2025, 053A01 (2025).
• Koji Azuma, "Networking quantum networks with minimum cost aggregation," npj Quantum Information 11, 51 (2025).
• Koji Azuma, Sophia Economou, David Elkouss, Paul Hilaire, Liang Jiang, Hoi-Kwong Lo, and Ilan Tzitrin, "Quantum repeaters: From quantum networks to the quantum internet," Reviews of Modern Physics 95, 045006 (2023).
• Yasushi Hasegawa, Rikizo Ikuta, Nobuyuki Matsuda, Kiyoshi Tamaki, Hoi-Kwong Lo, Takashi Yamamoto, Koji Azuma, and Nobuyuki Imoto, "Experimental time-reversed adaptive Bell measurement towards all-photonic quantum repeaters," Nature Communications 10, 378 (2019).
• Marcos Curty, Koji Azuma, and Hoi-Kwong Lo, "Simple security proof of twin-field type quantum key distribution protocol," npj Quantum Information 5, 64 (2019).
• Koji Azuma and Go Kato, "Aggregating quantum repeaters for the quantum internet," Physical Review A 96, 032332 (2017).
• Koji Azuma, Akihiro Mizutani, and Hoi-Kwong Lo, "Fundamental rate-loss trade-off for the quantum internet," Nature Communications 7, 13523 (2016).
• Koji Azuma, Kiyoshi Tamaki, and William J. Munro, "All-photonic intercity quantum key distribution," Nature Communications 6, 10171 (2015).
• Koji Azuma, Kiyoshi Tamaki, and Hoi-Kwong Lo, "All-photonic quantum repeaters," Nature Communications 6, 6787 (2015).
• Koji Azuma, Hitoshi Takeda, Masato Koashi, and Nobuyuki Imoto, "Quantum repeaters and computation by a single module: Remote nondestructive parity measurement," Physical Review A 85, 062309 (2012).

Awards

• 2023 Electronics Society Activity Testimonial, Electronics Society of the IEICE
• 2022 The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology of Japan, The Young Scientists' Prize
• 2007 Shoji Tanaka Prize (Department of Applied Physics at the University of Tokyo)

Academic Activities

• Vice Track Chair of Quantum Innovation 2026
• Committee Member of the CLEO 2026 Fundamental Science: 2. Quantum Information and Communication
• Technical Program Committe Member of International Conference on Quantum Communications, Networking, and Computing (QCNC 2026)
• Organizing Committee Chair of Quantum Information Technology Symposium 53
• Committee member of Quantum Innovation 2025
• Program Committee Member of 25th Asian Quantum Information Science Conference (AQIS'25)
• Committee Member of the CLEO 2025 Fundamental Science: 2. Quantum Information and Communication
• Chair of the Program Committee of ISNTT 2024
• Program Committee Member of 24th Asian Quantum Information Science Conference (AQIS'24)
• Committee member of Quantum Innovation 2024
• Associate Editor of Optica Quantum (2023-)
• Program Committee Member of 23rd Asian Quantum Information Science Conference (AQIS'23)
• Member of the Working Group for Strategic Review of the Quantum Technology Innovation Strategy, Cabinet Office (2021-2022)
• Co-Investigator of Grant-in-Aid for Transformative Research Areas (A) (21H05183) (2021-)
• Performer of the Moonshot Research and Development Program (Goal 6), Japan Science and Technology Agency (JPMJMS2061) (2020-)
• IOP trusted reviewer status (2020)
• Steering Committee Co-Chair of 12th Quantum Information Technology
• Program Committee Member of 19th Asian Quantum Information Science Conference (AQIS'19)
• The PRESTO, Japan Science and Technology Agency (JPMJPR1861) (2018-2022)
• Scientific Committee Member of Quantum Science Symposium Europe-2018
• Lead Joint Researcher in the CREST, Japan Science and Technology Agency (JPMJCR1671) (2017-2018)
• Steering Committee Member of Division 1 of the Physical Society of Japan (2016-2017)
• Organizing Committee Member of Quantum Information Technology Symposium 33
• Steering Committee Member of 9th- Quantum Information Technology
• Scientific Committee Member of Quantum Science Symposium Asia-2013

Visiting Professor

• Guest Professor of the Center for Quantum Information and Quantum Biology (QIQB), University of Osaka (2026-)
• Part-Time Lecturer in Graduate School of Engineering, the University of Tokyo (2024)
• Part-Time Lecturer in Graduate School of Engineering Science, Osaka University (2022-2023)
• Lecturer in the 68th Condensed Matter Physics Summer School (2022)
• Guest Associate Professor of Graduate School of Engineering Science, Osaka University (2019-2026)
• Joint Appointment Researcher of the PRESTO, Japan Science and Technology Agency (2018-2022)
• Part-time Lecturer in Graduate School of Pure Applied Sciences, University of Tsukuba (2017-2018)
• Visiting Researcher at the University of Cambridge (2017)
• Visiting Researcher at the University of Toronto (2012-2018)

Keywords

• Quantum information processing, quantum communication, quantum computation, quantum internet, quantum repeaters