基于贝尔对角态的量子层析密码学：经典与量子提纯协议的不等价性
量子物理
2009-11-10 v2
摘要
我们提出一种广义层析量子密钥分发协议，其中两方共享一个两量子比特的贝尔对角混合态。我们表明，若窃听者同时对多个量子 ancilla 态进行相干测量，则经典的安全密钥提纯方法不如量子纠缠提纯协议有效。我们还表明某些贝尔对角态能抵抗任何非相干窃听尝试。
引用
@article{arxiv.quant-ph/0408088,
title = {Quantum tomographic cryptography with Bell diagonal states: non-equivalence of classical and quantum distillation protocols},
author = {Dagomir Kaszlikowski and Jenn Yang Lim and D. K. L. Oi and Frederick H. Willeboordse and Ajay Gopinathan and L. C. Kwek},
journal= {arXiv preprint arXiv:quant-ph/0408088},
year = {2009}
}
备注
9 pages. 2 figures There was an error in the formula 4 (transformation of Bell states). This error does not change the main result of the paper, namely, that quantum distillation is more powerful than classical advantage distillation