2018/07/09 by Alberto Boaron, Gianluca Boso, Davide Rusca +10 · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physrevlett.121.190502
published as Phys. Rev. Lett. 121, 190502 (2018)
arxiv created 2018/07/09 · arxiv updated 2018/11/14
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 ultra low-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.