Acta Optica Sinica, Volume. 40, Issue 2, 0227001(2020)

Influences of Different Weather Conditions on Performance of Free-Space Quantum Communication System

Tao Liu1,2、*, Cong Zhu1, Chunyang Sun1, Xinxin Fang1, and Pingping Wang1
Author Affiliations
  • 1Department of Electronic and Communication Engineering, North China Electric Power University, Baoding, Hebei 0 71003, China
  • 2Institute of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
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    This paper investigates the effects of three weather conditions, such as rain, snow, and haze, on security key rate of a free-space quantum communication system using different signal wavelengths. For the cases of collective and individual attacks, analysis is conducted on why and how different weather conditions and signal wavelengths affect the security key rate based on a continuous-variable quantum key distribution model with Gaussian modulation. In the analysis, two different conditions are considered: one in which Bob uses a homodyne detector and the other in which a heterodyne detector is used. The relationship between the security key rate and transmission distance is simulated under various conditions, including different weather conditions and levels, different quantum signal wavelengths, different attack types, and different detection modes. The results of this paper can serve as an instructive reference for future practical free-space quantum communication system designs.

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    Tao Liu, Cong Zhu, Chunyang Sun, Xinxin Fang, Pingping Wang. Influences of Different Weather Conditions on Performance of Free-Space Quantum Communication System[J]. Acta Optica Sinica, 2020, 40(2): 0227001

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    Paper Information

    Category: Quantum Optics

    Received: Aug. 1, 2019

    Accepted: Sep. 9, 2019

    Published Online: Jan. 2, 2020

    The Author Email: Liu Tao (taoliu@ncepu.edu.cn)

    DOI:10.3788/AOS202040.0227001

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