平流层量子通信系统地空路径传播特性研究  

Study of propagating on Earth-space paths in stratospheric quantum communication system

作　　者：阎毅[1,2] 裴昌幸[1] 韩宝彬[1] 赵楠[1] 

机构地区：[1]西安电子科技大学综合业务网及关键技术国家重点实验室,陕西西安710071 [2]烟台大学物理系,山东烟台264005

出　　处：《电波科学学报》2008年第5期834-837,846,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金(60572147,60672119)

摘　　要：在考虑衰减和去极化效应的情况下,根据电磁波传播与散射理论,建立了平流层量子通信系统地空路径上脉冲单光子源的传播模型;数值分析了大气环境对量子密钥分发的影响。结果表明:在晴空条件下,大气衰减对量子误码率的影响较大;而在降雨条件下,去极化效应对量子误码率的影响不容忽视。Considering attenuation and depolarization effects on Earth space paths, a model for propagation of pulsed single photon source in stratospheric quantum communication system is obtained theoretically, based on theory of the electromagnetic wave propagation and scattering. By numerical analyzing the atmospheric environment on the quantum key distribution of a pulsed single photon propagating on Earth-space paths, it is shown that under clear sky atmospheric attenuation are obvious on quantum bit error rate, especially, under rainfall, depolarization effects on quantum bit error rate must also be considered.

关 键 词：平流层平台 量子通信 地空路径 去极化效应 量子误码率 

分 类 号：TN926.3[电子电信—通信与信息系统]