Ground to satellite secure key exchange using quantum cryptography
John Rarity, P. R. Tapster, P.M. Gorman, Paul Knight · New Journal of Physics · 2002
We examine the possibility of secure key exchange between a ground station and a low earth orbit satellite using the technique of quantum cryptography. The study suggests there are no technical obstacles to building a system that could exchange keys at kilobaud rates between a metre diameter telescope on the ground and a satellite with a 10 cm diameter lightweight telescope.