基于波分复用的空间量子-经典信号同传系统设计
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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.
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.
引文
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[2] Yu J,Zhang J,Dong Z,et al.Transmission of 8×480-Gb/s super-Nyquist-filtering 9-QAM-like signal at 100GHz-grid over 5000-km SMF-28and twentyfive 100 GHz-grid ROADMs[J].Optics Express,2013,21(13):15686-15691.
[3] Trowbridge S J.Ethernet and OTN-400 G and beyond[C]∥2015 Optical Fiber Communications Conference and Exhibition(OFC), March 22-26,2015,Los Angeles,USA.New York:IEEE,2015:1-18.
[4] Sasaki M,Fujiwara M,Ishizuka H,et al.Field test of quantum key distribution in the Tokyo QKD Network[J].Optics Express,2011,19(11):10387-10409.
[5] Wang L J,Chen L K,Ju L,et al.Experimental multiplexing of quantum key distribution with classical optical communication[J].Applied Physics Letters,2015,106(8):081108.
[6] Deng J W.The emit technique of space optical communication based on WDM[D]. Changchun University of Science and Technology,2013.邓佳伟.基于波分复用的空间光通信发射技术[D].长春:长春理工大学,2013.
[7] Liaw S K,Hsu K Y,Yeh J G,et al.Impacts of environmental factors to bi-directional 2×40 Gb/s WDM free-space optical communication[J].Optics Communications,2017,396:127-133.
[8] Wang X Y,Zhao N,Chen N,et al.Effects of atmospheric turbulence on the single-photon receiving efficiency and the performance of quantum channel with the modified approximate elliptic-beam model assumption[J].Quantum Information Processing,2018,17:14.
[9] Gisin N,Ribordy G,Tittel W,et al.Quantum cryptography[J].Reviews of Modern Physics,2002,74(1):145.
[10] Ma J,Jiang Y J,Yu S Y,et al.Packet error rate analysis of OOK, DPIM and PPM modulation schemes for ground-to-satellite optical communications[J].Optics Communications,2010,283(2):237-242.
[11] Srinivasan M, Vilnrotter V. Symbol-error probabilities for pulse-position modulation signaling with an avalanche photodiode receiver and Gaussian thermal noise[R]. The Telecommunications and Mission Operations Progress Report 42-134,[S.l.:s.n.].1998:1-11.
[12] Gagliardi R M,Karp S.Optical telecommunications and applications[M].Beijing:Publishing House of Electronics Industry,1998.