11 January 2005 Single-photon acquisition probability for free-space quantum key distribution
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Two theoretical models of single-photon acquisition probability based on the fundamental-mode Gaussian beam are established for free-space quantum key distribution and are compared in theory and simulation. 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 the transmitter and receiver and the receiver's antenna aperture. The single-photon acquisition probability is analyzed in the numerical simulation and its orders of magnitude are given for the ground-to-ground, satellite-to-ground and satellite-to-satellite links. The results of the theoretical analysis and the numerical simulation show that it is feasible to acquire single-photon for the satellite-to-ground and satellite-to-satellite quantum key distribution.
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Guangyu Zhang, Guangyu Zhang, Jing Ma, Jing Ma, Liying Tan, Liying Tan, Siyuan Yu, Siyuan Yu, Qiqi Han, Qiqi Han, Yunliang Chen, Yunliang Chen, } "Single-photon acquisition probability for free-space quantum key distribution", Proc. SPIE 5631, Quantum Optics and Applications in Computing and Communications II, (11 January 2005); doi: 10.1117/12.566152; https://doi.org/10.1117/12.566152


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