Simple 2.5 GHz time-bin quantum key distribution
Alberto Boaron, Boris Korzh, Raphael Houlmann, Gianluca Boso, Davide Rusca, Stuart Gray, Ming-Jun Li, Daniel Nolan, Anthony Martin, Hugo Zbinden · Applied Physics Letters · 2018
We present a 2.5 GHz quantum key distribution setup with the emphasis on a simple experimental realization. It features a three-state time-bin protocol based on a pulsed diode laser and a single intensity modulator. Implementing an efficient one-decoy scheme and finite-key analysis, we achieve record breaking secret key rates of 1.5 kbps over 200 km of standard optical fibers.