Acta Optica Sinica, Volume. 42, Issue 3, 0327018(2022)
Bit Error Analysis and Optimization of Optical Quantum Communication System Under Turbulent Channel
The wireless laser communication technology using optical quantum detection has broad application prospects in heaven and earth integrated secure communication networks. Based on the Poisson distribution model of photon number of a laser source, the atmospheric turbulence Gamma-Gamma model, the response model of the single photon detector, and the correlation counting signal processing method, we establish a calculation model of bit error rate of the optical quantum communication system in the turbulent channel. The effects of the distribution of photon number of the laser source, turbulent channel parameter, performance parameters of single photon detectors, and correlation counting method on the system BER are simulated. The results show that the system BER is negatively correlated with the average photon number of laser pulses, pulse frequency, and detector detection efficiency, while it is positively correlated with atmospheric turbulence intensity and detector dark counting. The system adopting the correlation counting method can effectively reduce the system BER. When the number of door openings is determined, the system has an optimal threshold for discrimination. The proposed model can provide references for the design and optimization of the optical quantum communication systems.
Get Citation
Copy Citation Text
Xuchao Liu, Huagui Li, Shilun Sun, Wenzhou Wu, Shaobo Li. Bit Error Analysis and Optimization of Optical Quantum Communication System Under Turbulent Channel[J]. Acta Optica Sinica, 2022, 42(3): 0327018
Category: Quantum Optics
Received: Sep. 2, 2021
Accepted: Sep. 26, 2021
Published Online: Jan. 24, 2022
The Author Email: Liu Xuchao (liuxuchao15@mails.ucas.ac.cn)