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arxiv: 0704.3833 · v1 · submitted 2007-04-29 · 🪐 quant-ph

Decoy State Quantum Key Distribution With Modified Coherent State

classification 🪐 quant-ph
keywords statecoherentdecoyquantumdistancedistributionmodifiedprotocol
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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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