Quantum noise ciphered optical stealth communication based on equivalent spectral encoding

作     者：Zhu, Huatao Liu, Zhanqi Xiang, Peng Chen, Shuwen LI, Feiyu Xu, Xiangming 

作者机构：Natl Univ Def Technol Coll Informat & Commun Wuhan 430010 Peoples R China Army Engn Univ Coll Commun Engn PLA Nanjing 210007 Peoples R China 

出 版 物：《OPTICS EXPRESS》 (Opt. Express)

年 卷 期：2022年第30卷第21期

页      面：38128-38138页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China 61901480 

主　　题：Coherent states Laser communications Optical code division multiple access Optical networks Quantum communications Quantum noise 

摘      要：To provide secure and covert transmission for optical communication system at the same time, a quantum-noise stream ciphered optical stealth communication approach is proposed for the first time. In the proposed system, the optical pulses are time spread by a chromatic dispersion device and then phase modulated with optical codes at chip rate to realize an equivalent spectral encoding. Binary optical codes are converted to multiple level phase-shift keying signal according to Y-00 protocol. The encoded optical signals are attenuated to mesoscopic coherent states and sent to a public channel. The ciphered signals are stealthy transmitted under public channel noise. The availability and covertness of the optical stealth channel is verified by system simulations.