Simulation of ground-satellite quantum key exchange using a dedicated atmospheric free-space test-bed

Paul J. Edwards; Peter Lynam; Colin Cochran; Adrian Blake

doi:10.1117/12.505350

3 February 2004 Simulation of ground-satellite quantum key exchange using a dedicated atmospheric free-space testbed

Paul J. Edwards, Peter Lynam, Colin Cochran, Adrian Blake

Proceedings Volume 5161, Quantum Communications and Quantum Imaging; (2004) https://doi.org/10.1117/12.505350
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

The University of Canberra and its research collaborators have established a dedicated free-space laser communications test-bed between a national telecommunications facility and four selected monitoring sites at distances ranging from 4 to 47 km. This test-bed is currently being used to simulate and characterize the free-space quantum channel along which secure quantum key exchanges could take place between earth stations and low earth orbit satellites, the latter acting as global key couriers. We present the results of these trials conducted under a variety of atmospheric conditions. We use the results to estimate error rates and secure key exchange rates for ground/satellite key exchange systems employing weak Poissonian pulses with more stringent security requirements than are sometimes quoted.

Citation Download Citation

Paul J. Edwards, Peter Lynam, Colin Cochran, and Adrian Blake "Simulation of ground-satellite quantum key exchange using a dedicated atmospheric free-space testbed", Proc. SPIE 5161, Quantum Communications and Quantum Imaging, (3 February 2004); https://doi.org/10.1117/12.505350

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