Analysis of the performance of classical-quantum signals simultaneous transmission sharing a same fiber schemes

Abstract

Abstract: For the two schemes of classical-quantum signals simultaneous transmission sharing a same fiber—transmission in the same waveband and transmission in distant wavebands, the formula for calculating the counting rate of spontaneous Raman scattering noise is derived respectively. Based on this, the influence of classical launch power and transmission distance on quantum key distribution’s performance is analyzed. The simulation results show that the counting rate of spontaneous Raman scattering noise in the same waveband is greater than that in distant wavebands under the same classical launch power. As the classical launch power increase, the slope of counting rate of spontaneous Raman scattering noise in the same waveband is much higher than that in distant wavebands. The quantum key distribution performance of the two schemes is affected both by the classical launch power and transmission distance, it’s more suitable to adopt the scheme of transmission in distant wavebands when the classical launch power is at high level and transmission distance is not so far. Conversely, it’s more suitable to adopt the scheme of transmission in the same waveband when the classical launch power signal is at low level and transmission distance is great.

Key words: quantum optics, quantum key distribution, Raman scattering, classical-quantum signal

CHENG Kang, ZHOU Yuanyuan, WANG Huan. Analysis of the performance of classical-quantum signals simultaneous transmission sharing a same fiber schemes[J]. Chinese Journal of Quantum Electronics.

References

[1] Bennett C H, Brassard G. An Update on Quantum Cryptography[J]. Lecture Notes in Computer Science, 1984, 196:475-480. [2] Huber D, Reindl M, Huo Yongheng, et al. Highly indistinguishable and strongly entangled photons from symmetric GaAs quantum dots[J]. Nature Communications, 2017, 8:155061-155069. [3] Aharonovich I, Englund D, Toth M. Solid-state single-photon emitters[J]. Nature Photonics, 2016, 10(10):631-641. [4] Lo H K, Curty M, Tamaki K. Secure quantum key distribution[J]. Nature Photonics, 2015, 8(8):595-604. [5] Gibney E. Chinese satellite is one giant step for the quantum internet.[J]. Nature, 2016, 535(7613):478-479. [6] Liao Shengkai, Yong Hailin, Liu Chang, et al. Long-distance free-space quantum key distribution in daylight towards inter-satellite communication[J]. Nature Photonics, 2017，11： 509-513. [7] Mao Yingqiu，Wang Bixiao, Zhao Chunxu, et al. Integrating quantum key distribution with classical communications in backbone fiber network[J]. Optics Express, 2018, 26(5): 6010-6020. [8] Karinou F, Brunner H H, Fung CH F, et al. Toward the Integration of CV Quantum Key Distribution in Deployed Optical Networks[J]. IEEE Photonics Technology Letters, 2018, 30(7):650-653. [9] Wang Yushuai, Li Yunxia, Shi Lei, et al. The research of classical-quantum channel multiplexing technology[J].Optical Communication Technology（光通信技术）, 2014(3): 59-62(in Chinese). [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):773-777. [11] Wang Yushuai, Li Yunxia, Shi Lei, et al. Scheme of multiplexed classical and quantum transmission system with heralded single-photon source[J]. Chinese Journal of Quantum Electronics（量子电子学报），2015, 32(4): 445-451（in Chinese）. [12] Xia T J, Chen D Z, Wellbrock G, et al. In-Band Quantum Key Distribution (QKD) on Fiber Populated by High-Speed Classical Data Channels[C]// Optical Fiber Communication Conference, 2006 and the 2006 National Fiber Optic Engineers Conference. Ofc. IEEE, 2006:3 pp. [13] Wang Liujun, Chen Luokan, Ju Lei, et al. Experimental multiplexing of quantum key distribution with classical optical communication[J]. Applied Physics Letters, 2015, 106(8):175-179. [14] Wang Liujun, Zou Kaiheng, Sun Wei, et al. Long distance co-propagation of quantum key distribution and terabit classical optical data channels[J]. Physical Review A, 2017, 95(1): 012301. [15] Chapuran T, Toliver P, Peters N, et al. Optical networking for quantum key distribution and quantum communications[J]. New Journal of Physics, 2009, 11(10):105001. [16] Agrawal G P. Fiber-Optic Communication Systems[M]. Jia Dongfang,Xin Xiangjun Transl. Publishing House of Electronics Industry, 2016: 60-61. [17] Wang Liujun. Experimental Study of Multiplexing Quantum Key Distribution and Classical Optical Communications（量子密钥分发与经典光通信融合的实验研究）[D]. Anhui: University of Science and Technology of China, 2016(in Chinese). （中科大博士王留军，潘建伟团队）