Fig. 4: Comparison of the SKBs per pulse with other QKD experiments.
From: High-rate intercity quantum key distribution with a semiconductor single-photon source
The in-lab SKBs per pulse (
) and the field-based SKBs per pulse in the finite-key regime (
) surpass previous realisations based on single-photon sources with photons in the telecom C-band and approach state-of-the-art decoy state QKD. The triangles (
) show the QKDs with SPSs based via deployed fibre and fibre spools, respectively. The solid lines represent simulated SKBs per pulse using the experimental parameters. The dashed, black line represents the SKBs per pulse that is achievable with experimentally feasible source optimisations. Corresponding distance is calculated for 0.1956 dB km−1 standard telecommunication fibre
