Figure 1From: Field trial of a three-state quantum key distribution scheme in the Florence metropolitan areaState of the art of QKD field trials. Recent QKD demonstrations with classical and quantum signal propagated through the same installed fiber. Total classical launch power Pc is reported in dBm. Ref. [18] used SNSPDs detectors, all the other used InGaAs detectors. Ref. [21] used wide-range wavelength multiplexing for classical and quantum channels (QC and CC)Back to article page