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.
Bibliographical notePublisher: Institute of Physics Publishing
Rarity, JG., Tapster, PR., Gorman, PM., & Knight, P. (2002). Ground to satellite secure key exchange using quantum cryptography. New Journal of Physics, 4 (82), 82.1 - 82.21. https://doi.org/10.1088/1367-2630/4/1/382