Temperature effects on atmospheric continuous-variable quantum key distribution

doi:10.1088/1674-1056/28/8/080304

Abstract Compared with the fiber channel, the atmospheric channel offers the possibility of a broader geographical coverage and more flexible transmission for continuous-variable quantum key distribution (CVQKD). However, the fluctuation of atmospheric conditions will lead to the loss of performance in atmospheric quantum communication. In this paper, we study how temperature affects atmospheric CVQKD. We mainly consider the temperature effects on the transmittance and interruption probability. From the numerical simulation analysis, it can be shown that the performance of atmospheric CVQKD is improved as temperature increases, with the other factors fixed. Moreover, the results in this work can be used to evaluate the feasibility of the experimental implementation of the atmospheric CVQKD protocols.

Keywords: atmospheric continuous-variable quantum key distribution temperature effects performance secret key rate

Received: 02 February 2019
Revised: 20 May 2019
Accepted manuscript online:

PACS:	03.67.Dd	(Quantum cryptography and communication security)
	03.67.Hk	(Quantum communication)
	03.67.-a	(Quantum information)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61505261).

Corresponding Authors: Hai-Long Zhang
E-mail: zhhl049@126.com

Cite this article:

Shu-Jing Zhang(张淑静), Hong-Xin Ma(马鸿鑫), Xiang Wang(汪翔), Chun Zhou(周淳), Wan-Su Bao(鲍皖苏), Hai-Long Zhang(张海龙) Temperature effects on atmospheric continuous-variable quantum key distribution 2019 Chin. Phys. B 28 080304

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