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arXiv 1806.08415quant-ph
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量子比特系统中的纠缠多边形不等式

Entanglement Polygon Inequality in Qubit Systems

Xiao-Feng Qian, Miguel A. Alonso, Joseph H. Eberly

摘要:

证明了任意$N$ -量子比特纯态的一组紧纠缠不等式。通过关注每个量子比特与其剩余伙伴之间的所有二分边缘纠缠,我们证明了不等式为每个边缘纠缠提供了一个上限,而已知的一夫一妻制关系建立了下限。利用几何多面体方法进一步分析了不等式的限制条件和共享性质,并给出了三量子比特GHZ类和W类纠缠态的例子来说明结果.

英文摘要:

We prove a set of tight entanglement inequalities for arbitrary $N$-qubit pure states. By focusing on all bi-partite marginal entanglements between each single qubit and its remaining partners, we show that the inequalities provide an upper bound for each marginal entanglement, while the known monogamy relation establishes the lower bound. The restrictions and sharing properties associated with the inequalities are further analyzed with a geometric polytope approach, and examples of three-qubit GHZ-class and W-class entangled states are presented to illustrate the results.

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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