Decoy-state quantum key distribution with nonclassical light generated in a one-dimensional waveguide
Huaixiu Zheng, Daniel J. Gauthier, Harold U. Baranger · Optics Letters · 2013
We investigate a decoy-state quantum key distribution (QKD) scheme with a sub-Poissonian single-photon source, which is generated on demand by scattering a coherent state off a two-level system in a one-dimensional waveguide. We show that, compared to coherent state decoy-state QKD, there is a two-fold increase of the key generation rate. Furthermore, the performance is shown to be robust against both parameter variations and loss effects of the system.