Teleportation and entanglement distillation in the presence of correlation among bipartite mixed states
Teleportation and entanglement distillation in the presence of correlation among bipartite mixed states
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二分混合态之间存在相关性时的隐形传态和纠缠蒸馏
DOI：
10.1103/physreva.68.012301
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
M. Hamada
中科院分区：
文献类型：
--
作者：
M. Hamada
与任意二分状态相关联的隐形传态通道表示当使用二分状态而不是用于隐形传态的理想最大纠缠态时代表隐形传态所遭受的变化的映射。这项工作提出并证明了使用 Weyl 对整数 d{>=}2、n{>=}1 的 (Z/dZ){sup 2n} 射影酉表示的隐形传态通道的显式表达式，已知 n=1。该公式允许 n 个二分混合态之间存在任何相关性，并且应用表明存在从具有相关性的混合态序列中蒸馏纠缠的可靠方案。
The teleportation channel associated with an arbitrary bipartite state denotes the map that represents the change suffered by a teleported state when the bipartite state is used instead of the ideal maximally entangled state for teleportation. This work presents and proves an explicit expression of the teleportation channel for teleportation using Weyl's projective unitary representation of (Z/dZ){sup 2n} for integers d{>=}2, n{>=}1, which has been known for n=1. This formula allows any correlation among the n bipartite mixed states, and an application shows the existence of reliable schemes for distillation of entanglement from a sequence of mixed states with correlation.