1.
Phys Rev Lett
; 121(19): 190502, 2018 Nov 09.
Artigo
em Inglês
| MEDLINE
| ID: mdl-30468607
RESUMO
We present a quantum key distribution system with a 2.5 GHz repetition rate using a three-state time-bin protocol combined with a one-decoy approach. Taking advantage of superconducting single-photon detectors optimized for quantum key distribution and ultralow-loss fiber, we can distribute secret keys at a maximum distance of 421 km and obtain secret key rates of 6.5 bps over 405 km.