Experimental 4-intensity decoy-state quantum key distribution with asymmetric basis-detector efficiency
Experimental 4-intensity decoy-state quantum key distribution with asymmetric basis-detector efficiency
The decoy-state method has been developed rapidly in quantum key distribution (QKD) since it is immune to photon-number splitting attacks. We examine two-basis-detector-efficiency asymmetry, which exists in realistic scenarios. By using the recent 4-intensity decoy-state optimization protocol, we report an implementation of high-rate QKD with asymmetric basis-detector efficiency, demonstrating a …