Detection and measure of genuine tripartite entanglement with partial transposition and realignment of density matrices.

Detection and measure of genuine tripartite entanglement with partial transposition and realignment of density matrices.
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密度矩阵部分转置和重新排列的真正三方纠缠的检测和测量

DOI:
10.1038/s41598-017-17585-7
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发表时间:
2017-12-08
期刊:
影响因子:
4.6
通讯作者:
Fei SM
Fei SM
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Li M;Wang J;Shen S;Chen Z;Fei SM

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探测和测量真实的多体纠缠是一项具有挑战性的任务。我们研究的问题,考虑平均为基础的正部分转置(PPT)的标准和重新排列的标准。给出了检测真三重纠缠的充分条件。我们还得到了真正的三方纠缠并发的条件的下界。虽然PPT准则和重排准则对于检测二体纠缠和提供二体并发的下界是强大的,但我们的结果提供了一种有效的操作方法来检测和测量真正的三体纠缠。
It is challenging task to detect and measure genuine multipartite entanglement. We investigate the problem by considering the average based positive partial transposition(PPT) criterion and the realignment criterion. Sufficient conditions for detecting genuine tripartite entanglement are presented. We also derive lower bounds for the genuine tripartite entanglement concurrence with respect to the conditions. While the PPT criterion and the realignment criterion are powerful for detecting bipartite entanglement and for providing lower bounds of bipartite concurrences, our results give an effective operational way to detect and measure the genuine tripartite entanglement.
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影响因子: 8.6
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