Unconditional security of coherent-state quantum key distribution with strong phase-reference pulse
量子物理
2009-11-10 v1
摘要
We prove the unconditional security of a quantum key distribution protocol in which bit values are encoded in the phase of a weak coherent-state pulse relative to a strong reference pulse. In contrast to implementations in which a weak pulse is used as a substitute for a single-photon source, the achievable key rate is found to decrease only linearly with the transmission of the channel.
引用
@article{arxiv.quant-ph/0403131,
title = {Unconditional security of coherent-state quantum key distribution with strong phase-reference pulse},
author = {Masato Koashi},
journal= {arXiv preprint arXiv:quant-ph/0403131},
year = {2009}
}
备注
4 pages, 3 figures