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.
| Original language | English |
|---|---|
| Article number | 31 |
| Pages (from-to) | 173-180 |
| Number of pages | 8 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5631 |
| DOIs | |
| State | Published - 2005 |
| Event | Quantum Optics and Applications in Computing and Communications II - Beijing, China Duration: 10 Nov 2004 → 12 Nov 2004 |
Keywords
- Free-space optical communications
- Quantum key distribution
- Single-photon acquisition probability
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