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arXiv 1706.04705quant-ph
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利用密度矩阵的重排矩阵的秩判定量子态的乘积的充要条件

Necessary and sufficient product criteria for quantum states via the rank of realignment matrix of density matrix

Xianfei Qi, Ting Gao, Fengli Yan

摘要:

基于密度矩阵的重排列矩阵的秩,给出了二分量子态的一个充分必要乘积判据。然后,这种方法被推广到多部系统。我们首先以类似于半可分的方式引入半积的概念,并证明半积等价于全积。因此,一个量子态是关于所有可能划分的二分积,意味着完全积,这与可分性的情况不同。对于纯态,可以很容易地看出,作为我们结果的一个特例,导出了多体系统的几个必要和充分可分性准则。几个具体的例子说明我们的标准是方便和可操作的。

英文摘要:

We present a necessary and sufficient product criterion for bipartite quantum states based on the rank of realignment matrix of density matrix. Then, this approach is generalized to multipartite systems. We first introduce the concept of semiproduct in a similar manner to the semiseparable and prove that semiproduct is equivalent to fully product. Therefore, a quantum state is bipartite product with respect to all possible partitions implies fully product which is different from the case of separability. For pure states, it can easily be seen that several necessary and sufficient separability criteria for multipartite systems are derived as a special case of our results. Several specific examples illustrate that our criteria are convenient and operational.

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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