Conceptual designs of onboard transceivers for ground-to-satellite quantum cryptography

Morio Toyoshima, Yozo Shoji, Yoshihisa Takayama, Hiroo Kunimori, Masahiro Takeoka, Mikio Fujiwara, Masahide Sasaki

研究成果: Conference contribution

1 被引用数 (Scopus)


A free-space quantum key distribution system is being developed by the National Institute of Information and Communications Technology (NICT) in Koganei, Japan. Quantum cryptography is a new technique for transmitting information where the security is guaranteed by the laws of physics. In such systems, a single photon is used for the quantum information. However, since the transmission distance in optical fibers is limited by the absorption of photons by the fiber, the maximum demonstrated range has been limited to about 100 km. Free-space quantum cryptography between an optical ground station and a satellite is a possible solution to extend the distance for a quantum network beyond the limits of optical fibers. At NICT, a laser communication demonstration between the NICT optical ground station and a low earth orbit satellite was successfully conducted in 2006. The use of free-space quantum key distribution for such space communication links is considered an important future application. This paper presents conceptual designs for the onboard transceivers for satellite quantum cryptography.

ホスト出版物のタイトルAtmospheric Propagation VI
出版ステータスPublished - 2009
イベントAtmospheric Propagation VI - Orlando, FL, United States
継続期間: 2009 4月 142009 4月 16


名前Proceedings of SPIE - The International Society for Optical Engineering


ConferenceAtmospheric Propagation VI
国/地域United States
CityOrlando, FL

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学


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