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Theoretical Study of Quantum Bit Rate in Free-Space Quantum Cryptography
作者姓名:马晶  张光宇  谭立英
作者单位:[1]National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001 [2]College of Applied Science, Harbin University of Science and Technology, Harbin 150080
摘    要:

关 键 词:理论学习  量子比率  自由空间  量子密码学
收稿时间:2005-12-05
修稿时间:2005-12-05

Theoretical Study of Quantum Bit Rate in Free-Space Quantum Cryptography
MA Jing,ZHANG Guang-Yu,TAN Li-Ying.Theoretical Study of Quantum Bit Rate in Free-Space Quantum Cryptography[J].Chinese Physics Letters,2006,23(6):1379-1382.
Authors:MA Jing  ZHANG Guang-Yu  TAN Li-Ying
Institution:National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001 College of Applied Science, Harbin University of Science and Technology, Harbin 150080
Abstract:The quantum bit rate is an important operating parameter in free-space quantum key distribution. We introduce the measuring factor and the sifting factor, and present the expressions of the quantum bit rate based on the ideal single-photon sources and the single-photon sources with Poisson distribution. The quantum bit rate is studied in the numerical simulation for the laser links between a ground station and a satellite in a low earth orbit. The results show that it is feasible to implement quantum key distribution between a ground station and a satellite in a low earth orbit.
Keywords:03  67  Dd  14  70  Bh  42  50  Ar  42  79  -e
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