Influence of atmospheric turbulence on the quantum polarization state

Ru Yang; Yang Xue; Yunxia Li; Lei Shi; Yu Zhu; Qiuli Zhu

doi:10.1117/12.2312038

6 March 2018 Influence of atmospheric turbulence on the quantum polarization state

Ru Yang, Yang Xue, Yunxia Li, Lei Shi, Yu Zhu, Qiuli Zhu

Proceedings Volume 10710, Young Scientists Forum 2017; 1071007 (2018) https://doi.org/10.1117/12.2312038
Event: Young Scientists Forum 2017, 2017, Shanghai, China

Abstract

In order to study the influence of atmospheric turbulence on the polarization state of the free space quantum communication, the relationship between the refractive index and altitude, the refractive index structure constant and the turbulence dimension is deduced based on two different atmospheric refractive index structural constants models. The turbulence intensity factor κ is introduced and the equation of the variation of the quantum polarization degree with turbulence intensity is established. Through the simulation of the turbulent refractive index and the performance of four different polarization states in the low altitude turbulence environment, the results show that the atmospheric turbulence in the near ground will affect the fluctuation of the degree of polarization, and the degree of polarization varies linearly with the change of turbulence intensity. In the case of polarization |H>, the range of polarization |H> varies from 0 to 0.14 with the change of turbulence intensity. The influence of atmospheric turbulence on four different polarization states is different, and the degree of |H> and |V> depolarization is greater in the daytime and back. The depolarization degree of |-> at night is greater. The relationship between the degree of polarization and the change of turbulence intensity is analyzed by mathematical modeling, which is helpful to select the reasonable experimental scheme and compensate the change of polarization state in the aviation quantum Secure communication channel.

Citation Download Citation

Ru Yang, Yang Xue, Yunxia Li, Lei Shi, Yu Zhu, and Qiuli Zhu "Influence of atmospheric turbulence on the quantum polarization state", Proc. SPIE 10710, Young Scientists Forum 2017, 1071007 (6 March 2018); https://doi.org/10.1117/12.2312038

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