Quantum ICT Collaboration Center

National Institute of Information and Communications Technology

Achievements/List of major papers

Achievements of NICT

For more than 20 years, NICT has been engaged in comprehensive R & D on Quantum ICT. We will continue to do so in collaboration with organizations such as Quantum ICT Laboratory and Space Communication Systems Laboratory.

Building and operating the testbed named “Tokyo QKD Network”

実証フィールド Tokyo QKD Networkの構築

The testbed “Tokyo QKD Network” was built at Tokyo metropolitan area in 2010. QKD devices used there were developed by various industrial and academic institutions. Using this testbed, a video conference with quantum cryptography was succeed for the first time in the world.

Extending the testbed and Accelerating R & D

アプリケーション化に向けた研究開発の加速化

The testbed “Tokyo Free Space Optics (FSO) Testbed” connecting 7.8 km was built in 2013. World's first demonstration of space quantum communication using a microsatellite was succeeded in 2017. We have also been conducting various R & D at Tokyo QKD Network.

List of major papers

  • M.Fujiwara,G.Kato,M.Sasaki"Information theoretically secure data relay using QKD network" IEEE Access ,Volume12(2024/9/26)
  • K.Wakui,Y.Tsujimoto,T.Kishimoto,M.Fujiwara,M.Sasaki,A.Hosaka,F.Kannari,M.Takeoka"Modelocked Thermal Frequency Combs for Ultrashort Chaotic Quantum Optics"Advanced Quantum Technologies(2024/5/22)
  • T. Ono, W. Roga, K. Wakui, M. Fujiwara, S. Miki, H. Terai, M. Takeoka"Demonstration of a Bosonic Quantum Classifier with Data Reuploading"Physical Review Letters(2023/7/6)
  • M.Fujiwara,H.Hashimoto,K.Doi,M.Kujiraoka"Secure secondary utilization system of genomic data using quantum secure cloud" Scientific Reports , Vol. 12, No. 18530, pp. 1-11, Nov. (2022)
  • H.Endo,T.Sasaki,M.Takeoka,M.Fujiwara,M.koashi"Line-of-sight quantum key distribution with differential phase shift keying" INew Journal of Physics, Vol. 24,pp. 25008-25008, Feb. (2022)
  • M. Fujiwara, H. Hashimoto, K. Doi, M. Kujiraoka, Y. Tanizawa, Y. Ishida, M. Sasaki, and M. Nagasaki, "Secure secondary utilization system of genomic data using quantum secure cloud" Sci Rep 12, 18530 (2022).
  • H. Endo, T. Sasaki, H. Takenaka, M. Fujiwara, M. Koashi, and M. Sasaki, "Line-of-sight quantum key distribution with differential phase shift keying," to be appeared in New J. Phys.
  • M. Fujiwara, R. Nojima, T. Tsurumaru, S. Moriai, M. Takeoka, and M. Sasaki, "Long-term secure distributed storage using quantum key distribution network with third-party verification," IEEE Trans. Quantum Engineer, vol. 3, 4100111, (2022).
  • T. S. Han and M. Sasaki, "Wiretap Channels With Causal and Non-Causal State Information: Revisited," IEEE Trans. Inform. Theory, vol. 67, no. 9, pp. 6122-6139, (2021).
  • H. Endo, M. Fujiwara, M. Kitamura, O. Tsuzuki, R. Shimizu, M. Takeoka, and M. Sasaki, "Group key agreement over free-space optical links," OSA Continuum, vol. 3, no. 9, pp. 2525-2543, (2020).
  • H. Endo, M. Fujiwara, M. Kitamura, O. Tsuzuki, T. Ito, R. Shimizu, M. Takeoka, and M. Sasaki, "Free space optical secret key agreement," Opt. Express, vol. 26, no. 18, pp. 23305-23332, (2018).
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