中国物理B ›› 2019, Vol. 28 ›› Issue (8): 80304-080304.doi: 10.1088/1674-1056/28/8/080304

• GENERAL • 上一篇    下一篇

Temperature effects on atmospheric continuous-variable quantum key distribution

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)   

  1. Henan Key Laboratory of Quantum Information and Cryptography, Zhengzhou Information Science and Technology Institute, Zhengzhou 450001, China
  • 收稿日期:2019-02-02 修回日期:2019-05-20 出版日期:2019-08-05 发布日期:2019-08-05
  • 通讯作者: Hai-Long Zhang E-mail:zhhl049@126.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61505261).

Temperature effects on atmospheric continuous-variable quantum key distribution

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)   

  1. Henan Key Laboratory of Quantum Information and Cryptography, Zhengzhou Information Science and Technology Institute, Zhengzhou 450001, China
  • Received:2019-02-02 Revised:2019-05-20 Online:2019-08-05 Published:2019-08-05
  • Contact: Hai-Long Zhang E-mail:zhhl049@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61505261).

摘要: 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.

关键词: atmospheric continuous-variable quantum key distribution, temperature effects, performance, secret key rate

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.

Key words: atmospheric continuous-variable quantum key distribution, temperature effects, performance, secret key rate

中图分类号:  (Quantum cryptography and communication security)

  • 03.67.Dd
03.67.Hk (Quantum communication) 03.67.-a (Quantum information)