Imprinting complete information about a quantum channel on its output state.
Imprinting complete information about a quantum channel on its output state.
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DOI：
10.1103/physrevlett.91.047902
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发表时间：
2002-11
影响因子：
8.6
通讯作者：
G. D’Ariano;Paoloplacido Lo Presti
中科院分区：
文献类型：
--
作者：
G. D’Ariano;Paoloplacido Lo Presti
我们引入了二分量子态的一个新性质，我们称之为忠实性，我们说，当一个状态与两个量子系统之一的信道作用时，它是忠实的;输出状态携带关于信道的完整信息。忠实性的概念也可以扩展到状态集，当输出状态一起携带通道的完整印记时。忠诚度的措施提出。
We introduce a novel property of bipartite quantum states, which we call faithfulness, and we say that a state is faithful when acting with a channel on one of the two quantum systems; the output state carries complete information about the channel. The concept of faithfulness can also be extended to sets of states, when the output states altogether carry a complete imprinting of the channel. Measures of degrees of faithfulness are proposed.