LOCC下局部纠缠对于完美区分作用在双qutdit上的酉操作并非必要
量子物理
2015-05-13 v4
摘要
近年来,通过局部操作与经典通信(LOCC)区分多体酉操作的问题引起了广泛关注。文献中关于该问题的最新研究表明,当允许有限次运行时,两个多体酉操作总是可以通过LOCC完美区分。然而,在这些方案中需要局部纠缠(由一方持有的纠缠态),这似乎意味着局部纠缠对于通过LOCC完美区分酉操作是必要的。在本文中,我们证明,在作用在双qudit上的两个酉操作之间,总是可以在不利用任何纠缠的情况下实现完美区分。因此,我们得出结论:局部纠缠对于通过LOCC完美区分作用在双qudit上的酉操作并非必要。
引用
@article{arxiv.0706.0941,
title = {Local Entanglement Is Not Necessary for Perfect Discrimination between Unitary Operations Acting on Two-Qudits by LOCC},
author = {Lvzhou Li and Daowen Qiu},
journal= {arXiv preprint arXiv:0706.0941},
year = {2015}
}
备注
6 pages, 2 figures, we have added Lemma 5 and its proof, and some sentences have been modified and supplemented, as well