Generalized three-intensity decoy state method for measurement device independent quantum key distribution
Quantum Physics
2015-06-17 v1
Abstract
We present improved results and more general results for the decoy-state measurement device independent quantum key distribution (MDI-QKD) where the intensities of all 3 pulses can be non-zero. We present a more tightened explicit formula for the lower bound of the yield of two single-photon pulses for this generalized 3-intensity protocol, which can be applied to the recently proposed MDI-QKD with imperfect single-photon sources such as the coherent states or the heralded states from the parametric down-conversion. We strictly prove that our result is better than the prior art result. With this result, the final key rate rises drastically.
Keywords
Cite
@article{arxiv.1309.5886,
title = {Generalized three-intensity decoy state method for measurement device independent quantum key distribution},
author = {Z. -W. Yu and Y. -H. Zhou and Xiang-Bin Wang},
journal= {arXiv preprint arXiv:1309.5886},
year = {2015}
}
Comments
7 pages. arXiv admin note: text overlap with arXiv:1308.5677, arXiv:1309.0471