Higher Security Thresholds for Quantum Key Distribution by Improved Analysis of Dark Counts
量子物理
2009-11-11 v2
摘要
We discuss the potential of quantum key distribution (QKD) for long distance communication by proposing a new analysis of the errors caused by dark counts. We give sufficient conditions for a considerable improvement of the key generation rates and the security thresholds of well-known QKD protocols such as Bennett-Brassard 1984, Phoenix-Barnett-Chefles 2000, and the six-state protocol. This analysis is applicable to other QKD protocols like Bennett 1992. We examine two scenarios: a sender using a perfect single-photon source and a sender using a Poissonian source.
引用
@article{arxiv.quant-ph/0502140,
title = {Higher Security Thresholds for Quantum Key Distribution by Improved Analysis of Dark Counts},
author = {J. -C. Boileau and J. Batuwantudawe and R. Laflamme},
journal= {arXiv preprint arXiv:quant-ph/0502140},
year = {2009}
}
备注
6 pages, 2 figures, v2: We obtained better results by using reverse reconciliation as suggested by Nicolas Gisin