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arXiv 1506.04550quant-ph
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多体全纠缠分数

Multipartite fully entangled fraction

Jianwei Xu

摘要:

完全纠缠分数是对二体态的定义,它与二体最大纠缠态密切相关,具有明确的实验和理论意义。在本文中,我们将其推广到多体情况,我们称之为多体完全纠缠分数(MFEF)。MFEF测量状态与GHZ状态的接近程度。除了非常特殊的状态外,MFEF的解析表达式很难得到,然而,我们证明了,任何状态的MFEF都是由有限阶多项式方程组确定的。因此,可以有效地数值计算MFEF。

英文摘要:

Fully entangled fraction is a definition for bipartite states, which is tightly related to bipartite maximally entangled states, and has clear experimental and theoretical significance. In this work, we generalize it to multipartite case, we call the generalized version multipartite fully entangled fraction (MFEF). MFEF measures the closeness of a state to GHZ states. The analytical expressions of MFEF are very difficult to obtain except for very special states, however, we show that, the MFEF of any state is determined by a system of finite-order polynomial equations. Therefore, the MFEF can be efficiently numerically computed.

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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