摘要
提高通信速率、实现全天候的空间量子通信是当前亟待解决的问题。概述了量子保密通信的发展历程及趋势,总结了自由空间量子密钥分配(QKD)的发展现状和研究意义。分析了自由空间QKD所存在的问题及其误码来源,讨论了背景光抑制的重要性,对抑制方法进行了分析介绍和对比研究,并对背景光抑制的下一步发展方向进行了简要探讨。
It is urgent at present to realize an all-weather space quantum communication and enhance its communication speed. The development history and the trend of quantum secure communication are summarized, and the development status and the research significance of the free space quantum key distribution （QKD） are also concluded. The source of bit errors and some existing problems of free space QKD are analyzed and the importance of background light suppression is discussed. The suppression methods are introduced and compared, and the next development direction of background light suppression is briefly discussed.
作者
朱秋立
石磊
魏家华
朱宇
杨汝
赵顾颢
Zhu Qiuli;Shi Lei;Wei Jiahua;Zhu Yu;Yang Ru;Zhao Guhao(Information and Navigation College, Air Force Engineering University, Xi＇ an, Shaanxi 710077, China)
出处
《激光与光电子学进展》
CSCD
北大核心
2018年第6期35-42,共8页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61601497)
关键词
量子光学
量子密钥分配
背景光
通信波长
时间同步
滤波器
quantum optics
quantum key distribution
background light
communication wavelength
time synchronization
filter
