经典-量子信号共信道传输实验噪声分析及性能优化

量子电子学报 ›› 2021, Vol. 38 ›› Issue (3): 365-373.

经典-量子信号共信道传输实验噪声分析及性能优化

李佳豪1, 石磊1∗, 张启发2, 薛阳1, 李天秀1

1 空军工程大学信息与导航学院, 陕西西安710077; 2 安徽问天量子科技股份有限公司, 安徽芜湖241000

收稿日期:2020-09-09 修回日期:2020-10-07 出版日期:2021-05-28 发布日期:2021-05-28
通讯作者: E-mail: slfly2012@163.com
作者简介:李佳豪( 1997 - ), 河北沧州人, 研究生, 主要从事光纤量子密钥分发方面的研究。E-mail: 825241916@qq.com
基金资助:
Supported by National Natural Science Foundation of China (国家自然科学基金, 61971436, 61803382)

Noise analysis and performance optimization of experiments in classical-quantum signals co-channel transmission

LI Jiahao1, SHI Lei1∗, ZHANG Qifa2, XUE Yang1, LI Tianxiu1

1 College of Information and Navigation, Air Force Engineering University, Xi’an 710077, China; 2 Anhui Asky Quantum Technology Co. Ltd., Wuhu 241000, China

Received:2020-09-09 Revised:2020-10-07 Published:2021-05-28 Online:2021-05-28

摘要/Abstract

摘要： 随着点对点光纤量子密钥分发技术的成熟及其迅猛发展的商业化应用趋势, 将量子信号与经典数据复用在同一根光纤中以提高系统效率和节约光纤资源成为近几年的研究热点之一。通过实验验证了两种共信道传输方案的噪声成分, 仿真分析了噪声对量子密钥分发系统性能的影响, 并针对实验中存在的问题对噪声抑制方案进行评估分析, 为经典―量子信号共信道传输商业化发展提供了实验支撑。实验结果表明: 0 dBm发射功率下, 未进行噪声抑制的较远波段共信道传输系统密钥正向传输距离最远为75 km，采用窄带滤波技术的同波段共信道传输系统密钥正向传输距离最远达到164 km。该实验结果为未来在经典光网络中承载量子密钥分发系统提供了可行的共信道传输噪声抑制参考方案。

关键词: 量子光学, 量子密钥分发, 波分复用, 噪声抑制, 窄带滤波

Abstract: With the development of point-to-point fiber quantum key distribution technology and its commercial application, the multiplexing of quantum signal and classical data in the same fiber to improve system efficiency and save fiber resources has become one of the research hot issues in recent years. The source of noise is verified by the experiments based on two co-channel transmission schemes, and the influence of noise on the performance of quantum key distribution system is simulated and analyzed. In addition, the noise suppression schemes are evaluated and analyzed aiming at the existing problems in experiments, which provide experimental support for the commercial development of classical-quantumsignals co-channel transmission. The experimental results show that the maximum security transmission distance in the co-propagating scheme without noise suppression at separate waveband is 75 km when the launched power is 0 dBm, while it can reach 164 km at the same waveband by using narrow-band filtering. This work provides a feasible solution for noise suppression of co-channel transmission in future quantum-classical integrated optical networks.

Key words: quantum optics, quantum key distribution, wavelength division multiplexing, noise suppression; narrow-band filtering

中图分类号:

TN918

李佳豪, 石磊∗, 张启发, 薛阳, 李天秀. 经典-量子信号共信道传输实验噪声分析及性能优化[J]. 量子电子学报, 2021, 38(3): 365-373.

LI Jiahao, SHI Lei∗, ZHANG Qifa, XUE Yang, LI Tianxiu. Noise analysis and performance optimization of experiments in classical-quantum signals co-channel transmission[J]. Chinese Journal of Quantum Electronics, 2021, 38(3): 365-373.

参考文献 24

[1]	Bennett C H, Brassard G. Quantum cryptography: Publickey distribution and coin tossing [C]. Proceedings of the IEEE International
	Conference on Computers, Systems and Signal Processing, Bangalore, India (IEEE, New York), 1984: 175-179.
[2]	Ekert A K. Quantum cryptography based on Bell’s theorem [J]. Physical Review Letters, 1991, 67(6): 661-663.
[3]	Gisin N, Ribordy G, Tittel W, et al. Quantum cryptography [J]. Reviews of Modern Physics, 2002, 74: 145-195.
[4]	Scarani V, Bechmann-Pasquinucci H, Cerf N J, et al. The security of practical quantum key distribution [J]. Reviews of Modern
	Physics, 2009, 81: 1301-1350.
[5]	Shaneman K, Gray S. Optical network security: Technical analysis of fiber tapping mechanisms and methods for detection &
	prevention [C]. Military Communications Conference. IEEE, 2004.
[6]	Townsend P D. Simultaneous quantum cryptographic key distribution and conventional datatransmission over installed fiber
	using wavelength-division multiplexing [J]. Electronics Letters, 1997, 33(3): 188-190.
[7]	Peters N A, Toliver P, Chapuran T E. Dense wavelength multiplexing of 1550 nm QKD with strong classical channels in
	reconfigurable networking environments [J]. New Journal of Physics, 2009, 11(4): 045012.
[8]	Eraerds P, Walenta N, Legr´e M. Quantum key distribution and 1 Gbps data encryption over a single fibre [J]. New Journal of
	Physics, 2010, 12(6): 063027.
[9]	Choi I P, Young R J, Townsend P D. Quantum key distribution on a 10 Gb/s WDM-PON [J]. Optics Express, 2010, 18(9):
96	00-9612.
[10]	Patel K A, Dynes J F, Choi I, et al. Coexistence of high-bit-rate quantum key distribution and data on optical fiber [J]. Physical
	Review X, 2012, 2(4): 041010.
[11]	Yoshino K I, Fujiwara M, Tanaka A, et al. High-speed wavelength-division multiplexing quantum key distribution system [J].
	Optics Letters, 2012, 37(2): 223-225.
[12]	Patel K A, Dynes J F, Lucamarini M, et al. Quantum key distribution for 10 Gb/s dense wavelength division multiplexing
	networks [J]. Applied Physics Letters, 2014, 104(5): 175-179.
[13]	Wang L J, Zou K H, Sun W, et al. Long distance co-propagation of quantum key distribution and terabit classical optical data
	channels [J]. Physical Review A, 2017, 95(1): 012301.
[14]	Mao Y Q, Wang B X, Zhao C X, et al. Integrating quantum key distribution with classical communications in backbone fiber
	network [J]. Optics Express, 2018, 26(5): 006010.
[15]	Wang B X, Mao Y Q, Shen L, et al. Long-distance transmission of quantum key distribution coexisting with classical optical
	communication over weakly-coupled few-mode fiber [J]. Optics Express, 2020, 28(9): 12558-12565.
[16]	Wang Y S, Li Y X, Shi L, et al. Scheme of multiplexed classical and quantum transmission system with heralded single-photon
	source [J]. Chinese Journal of Quantum Electronics, 2015, 32(4): 445-451.
	王宇帅, 李云霞, 石磊, 等. 预报单光子源下的经典-量子信息共信道同传系统研究[J]. 量子电子学报, 2015, 32(4):
44	5-451.
[17]	Cheng K, Zhou Y Y, Wang H. Performance analysis of classical-quantum signals simultaneous transmission sharing a same
	fiber schemes [J]. Chinese Journal of Quantum Electronics, 2019, 36(3): 336-341.
	程康, 周媛媛, 王欢. 经典-量子信号共纤同传方案性能分析[J]. 量子电子学报, 2019, 36(3): 336-341.
[18]	Sun Y M, Niu J N, Ji Y F. Noise suppression in the co-propagation of quantum signals and classical optical signals [J].
	Telecommunications Science, 2018, 34(9): 37-47.
	张咏梅, 牛佳宁, 纪越峰. 量子信号与经典光信号共纤传输中的噪声抑制技术[J]. 电信科学, 2018, 34(9): 37-47.
[19]	Yoshino K I, Fujiwara M, Tanaka A, et al. High-speed wavelength-division multiplexing quantum key distribution system [J].
	Optics Letters, 2012, 37(2): 223-225.
[20]	Thiago F D S, Xavier G B, Temporao G P, et al. Impact of Raman scattered noise from multiple telecomchannels on fiber-optic
	quantum key distribution systems [J]. Journal of Lightwave Technology, 2014, 32(13): 2332-2339.
[21]	Agrawal G P. Fiber-Optic Communication Systems [M]. Trans. by Jia D F, Xin X J. Beijing: Publishing House of Electronics
	Industry, 2016: 60-61.
	阿戈沃. 光纤通信系统[M]. 贾东方, 忻向军, 译. 北京: 电子工业出版社, 2016: 60-61.
[22]	Zhang Y, Ge C F, Feng D J, et al. The research on channel crosstalk of DWDM system [J]. Journal of Optoelectronics Laser,
19	99, 10(6): 525-527.
	张颖, 葛春风, 冯德军, 等. DWDM 系统信道串扰因素的研究[J]. 光电子·激光, 1999, 10(6): 525-527.
[23]	Ma X F, Qi B, Zhao Y, et al. Practical decoy state for quantum key distribution [J]. Physical Review A, 2005, 72(1): 012326.
[24]	Mlejnek M, Kaliteevskiy N A, Nolan D A. Reducing spontaneous Raman scattering noise in high quantum bit rate QKD
	systems over optical fiber [J]. 2017, arXiv: 1712.05891.