中国物理B ›› 2020, Vol. 29 ›› Issue (2): 20301-020301.doi: 10.1088/1674-1056/ab5efd

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Performance analysis of continuous-variable measurement-device-independent quantum key distribution under diverse weather conditions

Shu-Jing Zhang(张淑静), Chen Xiao(肖晨), Chun Zhou(周淳), Xiang Wang(汪翔), Jian-Shu Yao(要建姝), Hai-Long Zhang(张海龙), Wan-Su Bao(鲍皖苏)   

  1. 1 Henan Key Laboratory of Quantum Information and Cryptography, PLA SSF IEU, Zhengzhou 450001, China;
    2 PLA SSF IEU, Zhengzhou 450001, China;
    3 Fujian Chengyi College of Jimei University, Xiamen 361021, China
  • 收稿日期:2019-08-17 修回日期:2019-11-13 出版日期:2020-02-05 发布日期:2020-02-05
  • 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).

Performance analysis of continuous-variable measurement-device-independent quantum key distribution under diverse weather conditions

Shu-Jing Zhang(张淑静)1, Chen Xiao(肖晨)2, Chun Zhou(周淳)1, Xiang Wang(汪翔)1, Jian-Shu Yao(要建姝)3, Hai-Long Zhang(张海龙)1, Wan-Su Bao(鲍皖苏)1   

  1. 1 Henan Key Laboratory of Quantum Information and Cryptography, PLA SSF IEU, Zhengzhou 450001, China;
    2 PLA SSF IEU, Zhengzhou 450001, China;
    3 Fujian Chengyi College of Jimei University, Xiamen 361021, China
  • Received:2019-08-17 Revised:2019-11-13 Online:2020-02-05 Published:2020-02-05
  • Contact: Hai-Long Zhang E-mail:zhhl049@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61505261).

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摘要： The effects of weather conditions are ubiquitous in practical wireless quantum communication links. Here in this work, the performances of atmospheric continuous-variable measurement-device-independent quantum key distribution (CV-MDI-QKD) under diverse weather conditions are analyzed quantitatively. According to the Mie scattering theory and atmospheric CV-MDI-QKD model, we numerically simulate the relationship between performance of CV-MDI-QKD and the rainy and foggy conditions, aiming to get close to the actual combat environment in the future. The results show that both rain and fog will degrade the performance of the CV-MDI-QKD protocol. Under the rainy condition, the larger the raindrop diameter, the more obvious the extinction effect is and the lower the secret key rate accordingly. In addition, we find that the secret key rate decreases with the increase of spot deflection distance and the fluctuation of deflection. Under the foggy condition, the results illustrate that the transmittance decreases with the increase of droplet radius or deflection distance, which eventually yields the decrease in the secret key rate. Besides, in both weather conditions, the increase of transmission distance also leads the secret key rate to deteriorate. Our work can provide a foundation for evaluating the performance evaluation and successfully implementing the atmospheric CV-MDI-QKD in the future field operation environment under different weather conditions.

关键词: weather conditions, atmospheric continuous-variable measurement-device-independent quantum key distribution (CV-MDI-QKD), performance

Abstract: The effects of weather conditions are ubiquitous in practical wireless quantum communication links. Here in this work, the performances of atmospheric continuous-variable measurement-device-independent quantum key distribution (CV-MDI-QKD) under diverse weather conditions are analyzed quantitatively. According to the Mie scattering theory and atmospheric CV-MDI-QKD model, we numerically simulate the relationship between performance of CV-MDI-QKD and the rainy and foggy conditions, aiming to get close to the actual combat environment in the future. The results show that both rain and fog will degrade the performance of the CV-MDI-QKD protocol. Under the rainy condition, the larger the raindrop diameter, the more obvious the extinction effect is and the lower the secret key rate accordingly. In addition, we find that the secret key rate decreases with the increase of spot deflection distance and the fluctuation of deflection. Under the foggy condition, the results illustrate that the transmittance decreases with the increase of droplet radius or deflection distance, which eventually yields the decrease in the secret key rate. Besides, in both weather conditions, the increase of transmission distance also leads the secret key rate to deteriorate. Our work can provide a foundation for evaluating the performance evaluation and successfully implementing the atmospheric CV-MDI-QKD in the future field operation environment under different weather conditions.

Key words: weather conditions, atmospheric continuous-variable measurement-device-independent quantum key distribution (CV-MDI-QKD), performance

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

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