Decoy-State Quantum Key Distribution with Nonclassical Light Generated in a One-dimensional Waveguide

Abstract

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.

3 pages, 3 figures

References in corpus (3)

• Quantum key distribution over 122 km of standard telecom fiber
• Strongly Correlated Two-Photon Transport in One-Dimensional Waveguide Coupled to A Two-Level System
• Simple and efficient quantum key distribution with parametric down-conversion