摘要
通过分析空间量子通信系统和经典光通信系统的误码率,设计了一种基于波分复用技术的空间量子-经典信号同传系统,并通过软件仿真分析其可行性。在256ns内共传递15bit量子密钥和128bit经典信息,经典信息误码率为4.07×10^(-15),结果表明该系统可以有效实现空间量子信号和经典信号的共信道同传,同时扩大空间量子密钥分发系统信道容量。
The bit error rates(BERs)of both the free space quantum communication system and the classical optical communication system are analyzed.A free space quantum-classical signal coexistence transmission system is designed based on the wavelength division multiplexing technology,whose feasibility is investigated by the software simulation.The 15 bits quantum information and 128 bits classical information are totally transmitted within 256 ns and the BER of classical information is 4.07×10-15.The results show that the designed system can effectively realize the coexistence transmission of free space quantum and classical signals in the same channel and simultaneously expand the channel capacity of the free space quantum key distribution system.
作者
朱宇
石磊
魏家华
朱秋立
杨汝
赵顾颢
Zhu Yu;Shi Lei;Wei Jiahua;Zhu Qiuli;Yang Ru;Zhao Guhao(Graduate College,Air Force Engineering University,Xi'an,Shaanxi 710051,China;Information and Navigation College,Air Force Engineering University,Xi'an,Shaanxi 710077,China;Air Traffic Control and Navigation School,Air Force Engineering University,Xi'an,Shaanxi 710051,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2019年第8期224-230,共7页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61601497)
关键词
量子光学
量子密钥分发
脉冲位置调制
波分复用
自由空间光通信
quantum optics
quantum key distribution
pulse position modulation
wavelength division multiplexing
free space optical communication
