Mixed-state entanglement and distillation: Is there a "bound" entanglement in nature?
Mixed-state entanglement and distillation: Is there a "bound" entanglement in nature?
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DOI：
10.1103/physrevlett.80.5239
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发表时间：
1998-06-15
影响因子：
8.6
通讯作者：
Horodecki, R
中科院分区：
文献类型：
--
作者：
Horodecki, M;Horodecki, P;Horodecki, R
证明了如果一个混合态能被蒸馏成单态，它必须违反部分转置判据[A.佩雷斯，物理学牧师莱特。76，1413（1996）]。这意味着有两种性质不同的纠缠：“自由”纠缠是可折叠的，“束缚”纠缠不能被带到用于量子通信目的的单线态形式。讨论了结果的可能物理意义。
It is shown that if a mixed state can be distilled to the singlet form it must violate partial transposition criterion [A. Peres, Phys. Rev. Lett. 76, 1413 (1996)]. It implies that there are two qualitatively different types of entanglement: "free" entanglement which is distillable, and "bound" entanglement which cannot be brought to the singlet form useful for quantum communication purposes. A possible physical meaning of the result is discussed.