Local distinguishability of multipartite orthogonal quantum states
Local distinguishability of multipartite orthogonal quantum states
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DOI：
10.1103/physrevlett.85.4972
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发表时间：
2000-12-04
影响因子：
8.6
通讯作者：
Vedral, V
中科院分区：
文献类型：
--
作者：
Walgate, J;Short, AJ;Vedral, V
我们考虑一个量子系统的一个副本，准备在两个正交的纯态之一，纠缠或以其他方式，并分布在任何数量的当事人。我们证明，它是可能的，以确定这两个国家的系统是在通过本地操作和经典的通信。我们概述的协议是完全可靠和完全通用的;它将正确区分任何两个正交状态100%的时间。
We consider one copy of a quantum system prepared in one of two orthogonal pure states, entangled or otherwise, and distributed between any number of parties. We demonstrate that it is possible to identify which of these two states the system is in by means of local operations and classical communication alone. The protocol we outline is both completely reliable and completely general; it will correctly distinguish any two orthogonal states 100% of the time.