Passive sources for the Bennett-Brassard 1984 quantum-key-distribution protocol with practical signals
Passive sources for the Bennett-Brassard 1984 quantum-key-distribution protocol with practical signals
Most experimental realizations of quantum key distribution are based on the Bennett-Brassard 1984 (the so-called BB84) protocol. In a typical optical implementation of this scheme, the sender uses an active source to produce the required BB84 signal states. While active state preparation of BB84 signals is a simple and elegant …