【摘要】 星地量子密钥分配的保密性在全球信息的安全传递方面将起巨大作用。本文采用蒙塔卡洛方法对星地量子密钥实验进行仿真,主要研究同步激光脉冲和单光子在大气中的传输,探讨在大气环境的作用下单光子探测系统开门持续时间和开门精度对单光子捕获概率的影响,该结果对量子密钥试验系统的设计提供重要的参考和依据。更多还原

【Abstract】 Satellite-to-ground Quantum key distribution (QKD) ,which has excellent characteristics in the information security , is being researched more and more. Make using of the Monte Carlo method, this paper majors in the influence of gate-opening time and the gateway threshold accuracy of single-photo detection system in the receiving station over the single-photo acquisition probability, which is based on the study of synchronized impulse and single-photo between the satellite and ground transmission. The simulation results are of great reference value for the design of satellite-to-ground quantum key distribution experiment.更多还原