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ZHANG Guang-yu, MA Jing, TAN Li-ying, YU Si-yuan. The research of single photon acquisition probability based on the fundamental-mode Gaussian beam[J]. LASER TECHNOLOGY, 2005, 29(5): 522-524,527.
Citation: ZHANG Guang-yu, MA Jing, TAN Li-ying, YU Si-yuan. The research of single photon acquisition probability based on the fundamental-mode Gaussian beam[J]. LASER TECHNOLOGY, 2005, 29(5): 522-524,527.

The research of single photon acquisition probability based on the fundamental-mode Gaussian beam

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  • Received Date: June 26, 2004
  • Revised Date: August 08, 2004
  • Published Date: September 24, 2005
  • Theoretical model of single photon acquisition probability is established for free-space quantum key distribution.The expression of single photon acquisition probability is deduced from the fundamental-mode Gaussian beam.The parameters that influence the single photon acquisition probability are the transmitter's tracking-pointing error,the far-field divergence angle,the link distance between transmitter and receiver and the receiver's antenna aperture.The single photon acquisition probability is analyzed in numerical simulation for the link between a ground station and a satellite in a low earth orbit and it is normally on the order of 10-3~10-5.
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