1305.6480 (Qin Wang et al.)

An efficient implementation of the decoy-state
measurement-device-independent quantum key distribution with heralded
single-photon sources    [PDF]

Qin Wang, Xiang-Bin Wang

We present an efficient proposal on using both the triggered and non-triggered events of heralded single-photon sources for the measurement-device-independent quantum key distribution. We compare our new scheme with the existing methods using either weak coherent sources or heralded single photon sources, and find that our new scheme can give higher key rate and longer secure distance. Moreover, we also show the different behavior of our scheme when using different heralded single-photon sources, i.e., in poisson or thermal distribution. We demonstrate that the former can generate a relatively higher secure key rate than the latter, and can thus work more efficiently in practical quantum key distributions.

View original: http://arxiv.org/abs/1305.6480