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arXiv 0705.3534quant-ph
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具有正部分转置的循环态

On circulant states with positive partial transpose

Dariusz Chruscinski, Andrzej Kossakowski

摘要:

我们构造了一大类量子“d × d”态,它们在部分转置下是正的(所谓的PPT态)。这种构造是基于全希尔伯特空间的某些直和分解,显示出特有的循环结构--也就是我们称之为循环态的方式。结果表明,部分转置映射任何这样的分解到另一个,因此原始密度矩阵和它的部分转置伙伴共享类似的循环特性。这个类包含了文献中许多众所周知的PPT状态的例子,并产生了一个巨大的全新的状态家族。

英文摘要:

We construct a large class of quantum "d x d" states which are positive under partial transposition (so called PPT states). The construction is based on certain direct sum decomposition of the total Hilbert space displaying characteristic circular structure - that is way we call them circulant states. It turns out that partial transposition maps any such decomposition into another one and hence both original density matrix and its partially transposed partner share similar cyclic properties. This class contains many well known examples of PPT states from the literature and gives rise to a huge family of completely new states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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