| 自由空间量子密码通信中量子密钥比特率研究 |
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| 引用本文： | 张光宇,马晶,谭立英.自由空间量子密码通信中量子密钥比特率研究[J].量子电子学报,2005,22(6):868-872. |
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| 作者姓名： | 张光宇 马晶 谭立英 |
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| 作者单位： | 哈尔滨工业大学可调谐激光技术国家级重点实验室,黑龙江,哈尔滨,150001;哈尔滨理工大学应用科学学院,黑龙江,哈尔滨,150080;哈尔滨工业大学可调谐激光技术国家级重点实验室,黑龙江,哈尔滨,150001 |
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| 摘 要： | 通过引入量子信道传输率、单光子捕获概率、检测因子和数据筛选因子,给出了自由空间量子密钥分配中量子密钥比特率的表达式.针对低轨卫星-地面站间激光链路,进行了量子密钥比特率的数值仿真研究.结果表明,在低轨卫星-地面站间进行量子密钥分配是可行的.
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| 关 键 词： | 量子密码术 量子密钥分配 量子密钥比特率 自由空间 卫星 |
| 文章编号： | 1007-5461（2005）06-0868-05 |
| 收稿时间： | 2004-10-20 |
| 修稿时间： | 2004-11-19 |
Study on quantum key bit rate in free-space quantum cryptography |
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| ZHANG Guang-yu,MA Jing,TAN Li-ying.Study on quantum key bit rate in free-space quantum cryptography[J].Chinese Journal of Quantum Electronics,2005,22(6):868-872. |
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| Authors: | ZHANG Guang-yu MA Jing TAN Li-ying |
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| Abstract: | The expressions of the quantum key bit rate are given for free-space quantum key distribution by introducing the quantum channel transmission, the single-photon acquisition probability, the detection factor and the sifting factor. The quantum key 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. |
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| Keywords: | quantum cryptography quantum key distribution quantum key bit rate free-space satellite |
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