Practical quantum key distribution
Hugo Zbinden, Sylvain Fasel, Nicolas Gisin, Olivier Guinnard, G. Ribordy, André Stefanov, Damien Stucki · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2002
Quantum key distribution (QKD) is stepping out of the lab. We present a commercial fibre-optic QKD-prototype based on faint laser pulses and the results of field tests. Faint laser, single photon and entangled-photon based systems are compared with respect to possible bit rates, detector noise and security and their possible implementation in a commercial apparatus.