Effect of non-spherical atmospheric charged particles and atmospheric visibility on performance of satellite-ground quantum link and parameters simulation

doi:10.1016/S1005-8885(17)60240-1

JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM ›› 2017, Vol. 24 ›› Issue (6): 39-48.doi: 10.1016/S1005-8885(17)60240-1

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Effect of non-spherical atmospheric charged particles and atmospheric visibility on performance of satellite-ground quantum link and parameters simulation

Shi Li1 , Nie Min1, Yang Guang1,2, Pei Changxing3

1. 西安邮电大学 2. 西安邮电学院 3. 西安电子科技大学

Received:2017-08-04 Revised:2017-09-28 Online:2017-12-30 Published:2017-12-01
Contact: Li SHI E-mail:18966809693@163.com
Supported by:
the National Natural Science Foundation of China (61172071, 61201194), the International Scientific and Technological Cooperation and Exchange Program in Shaanxi Province, China (2015KW-013) and the Scientific Research Program Funded by Shaanxi Provincial Education Department, China (16JK1711).

Abstract

Abstract: In order to study the relationship between the non-spherical atmospheric charged particles and satellite-ground quantum links attenuation. The relationship among the particle concentration, equivalent radius, charge density of the charged particle, the attenuation coefficient and entanglement of the satellite-ground quantum link can be established first according to the extinction cross section and spectral distribution function of the non-spherical atmospheric charged particles. The quantitative relationship between atmospheric visibility and communication fidelity of satellite-ground quantum link were analyzed then. Simulation results show that the ellipsoid, Chebyshev atmospheric charged particle influences on attenuation of the satellite-ground quantum link increase progressively. When the equivalent particle radius is 0.2 μm and the particle concentration is 50 μg/m3, the attenuation coefficient and entanglement of the satellite-ground quantum link is 9.21 dB/km, 11.46 dB/km and 0.453, 0.421 respectively; When the atmospheric visibility reduces from 8 km to 2 km, the communication fidelity of satellite-ground quantum link decreases from 0.52 to 0.08. It is shown that the non-spherical atmospheric charged particles and atmospheric visibility influence greatly on the performance of the satellite-ground quantum link communication system. Therefore, it is necessary to adjust the parameters of the quantum-satellite communication system according to the visibility values of the atmosphere and the shapes of the charged particles in the atmosphere to improve reliability of the satellite-ground quantum link.

Key words: satellite-ground quantum link, non-spherical atmospheric charged particles, atmospheric visibility, degree of quantum entanglement

CLC Number:

Shi Li1,Nie Min1, Yang Guang1,2, Pei Changxing3. Effect of non-spherical atmospheric charged particles and atmospheric visibility on performance of satellite-ground quantum link and parameters simulation[J]. JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM, 2017, 24(6): 39-48.

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Effect of non-spherical atmospheric charged particles and atmospheric visibility on performance of satellite-ground quantum link and parameters simulation

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