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Proceedings Paper

Single-photon acquisition probability for free-space quantum key distribution
Author(s): Guangyu Zhang; Jing Ma; Liying Tan; Siyuan Yu; Qiqi Han; Yunliang Chen
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Paper Abstract

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.

Paper Details

Date Published: 11 January 2005
PDF: 8 pages
Proc. SPIE 5631, Quantum Optics and Applications in Computing and Communications II, (11 January 2005); doi: 10.1117/12.566152
Show Author Affiliations
Guangyu Zhang, Harbin Institute of Technology (China)
Jing Ma, Harbin Institute of Technology (China)
Liying Tan, Harbin Institute of Technology (China)
Siyuan Yu, Harbin Institute of Technology (China)
Qiqi Han, Harbin Institute of Technology (China)
Yunliang Chen, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 5631:
Quantum Optics and Applications in Computing and Communications II
Guang-Can Guo; Hoi-Kwong Lo; Masahide Sasaki; Songhao Liu, Editor(s)

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