A Theoretical Scheme for Multi-user Quantum Key Distribution with N Einstein-Podolsky-Rosen Pairs on a Passive Optical Network
Deng Fu-Guo, Xiao-Shu Liu, Ma Ying-Jun, Xiao Li, Long Gui-Lu · Chinese Physics Letters · 2002
We propose a theoretical scheme for any-to-any multi-user quantum key distribution on a passive optical network with ordered N Einstein-Podolsky-Rosen pairs. This scheme is safe and more efficient than those with single photons. Its efficiency approaches 100% in the limit that the number of pairs used in the eavesdropping check becomes negligible. It also has high capacity and is convenient for users.