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arXiv · 0704.3833

Decoy State Quantum Key Distribution With Modified Coherent State

Zhen-Qiang Yin·Zheng-Fu Han·Fang-Wen Sun·Guang-Can Guo
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Abstract

To beat PNS attack, decoy state quantum key distribution (QKD) based on coherent state has been studied widely. We present a decoy state QKD protocol with modified coherent state (MCS). By destruction quantum interference, MCS with fewer multi-photon events can be get, which may improve key bit rate and security distance of QKD. Through numerical simulation, we show about 2-dB increment on security distance for BB84 protocol.

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Zhen-Qiang Yin, Zheng-Fu Han, Fang-Wen Sun, Guang-Can Guo. 2007-04-29. Decoy State Quantum Key Distribution With Modified Coherent State. https://doi.org/10.1103/physreva.76.014304

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