Single-photon acquisition probability for free-space quantum key distribution

被引：6

作者：

Zhang, GY ^{[1
]}

Ma, J ^{[1
]}

Tan, LY ^{[1
]}

Yu, SY ^{[1
]}

Han, QQ ^{[1
]}

Chen, YL ^{[1
]}

机构：

[1] Harbin Inst Technol, Natl Key Lab Tunable Laser Technol, Harbin 150001, Peoples R China

来源：

QUANTUM OPTICS AND APPLICATIONS IN COMPUTING AND COMMUNICATIONS II | 2005年 / 5631卷

关键词：

quantum key distribution; free-space optical communications; single-photon acquisition probability;

D O I：

10.1117/12.566152

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

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.

引用

页码：173 / 180

页数：8

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