Quantum Key Distribution (QKD) provides a mean for unconditionally secure secret key sharing for secure communication. For a practical QKD system, the recently proposed decoy state protocol has become an essential tool. In this work, we conduct numerical analysis against several bounds for one decoy state with two way QKD protocol and compare their performance in terms of key rate and maximum secure distance.

Jan 1, 20131 citation

arXiv:1006.1693 · Optics Communications

Decoy states and two way quantum key distribution schemes

Jesni Shamsul Shaari, Iskandar Bahari, Sellami Ali

Published Oct 9, 2010• 13 citations

arXiv HTML PDF

DOI: 10.1016/j.optcom.2010.09.060

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142\phantom{\rule{0.3em}{0ex}}\mathrm{km}

(using only one-way classical communications with decoy states) to

181\phantom{\rule{0.3em}{0ex}}\mathrm{km}

. The second scheme is able to achieve a 10% greater key generation rate in the whole regime of distances. We conclude that decoy-state QKD with two-way classical postprocessing is of practical interest.