Performance of underwater quantum key distribution with polarization encoding.

  title={Performance of underwater quantum key distribution with polarization encoding.},
  author={Shi-Cheng Zhao and Xinhong Han and Ya Xiao and Yuan Shen and Yongjian Gu and Wen-Dong Li},
  journal={Journal of the Optical Society of America. A, Optics, image science, and vision},
  volume={36 5},
  • S. Zhao, Xinhong Han, Wen-Dong Li
  • Published 4 March 2019
  • Computer Science
  • Journal of the Optical Society of America. A, Optics, image science, and vision
Underwater quantum key distribution (QKD) has potential applications in absolutely secure underwater communication. However, the performance of underwater QKD is limited by the optical elements, background light, and dark counts of the detector. In this paper, we propose a modified formula for the quantum bit error rate (QBER), which takes into account the effect of detector efficiency on the QBER caused by the background light. Then we calculate the QBER of the polarization encoding BB84… 

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