Getting Something Out of Nothing
量子物理
2007-05-23 v1
摘要
We study quantum key distribution with standard weak coherent states and show, rather counter-intuitively, that the detection events originated from vacua can contribute to secure key generation rate, over and above the best prior art result. Our proof is based on a communication complexity/quantum memory argument.
引用
@article{arxiv.quant-ph/0503004,
title = {Getting Something Out of Nothing},
author = {Hoi-Kwong Lo},
journal= {arXiv preprint arXiv:quant-ph/0503004},
year = {2007}
}
备注
4 pages