Briegel-Dur-Cirac-Zoller 1998: chain of entanglement-purification + entanglement-swapping stations enables long-distance secure quantum communication; overcomes exponential photon loss.
Briegel-Dur-Cirac-Zoller 1998: chain of entanglement-purification + entanglement-swapping stations enables long-distance secure quantum communication; overcomes exponential photon loss.