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arXiv 1908.03117quant-phmath-phmath.MP
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M量子比特任意态的纠缠距离

Entanglement distance for an arbitrary state of M qubits

Denise Cocchiarella, Stefano Scali, Salvatore Ribisi, Bianca Nardi, Ghofrane Bel Hadj Aissa, Roberto Franzosi

摘要:

我们提出了一个可以计算的$M$ -量子比特系统的任何纯态的纠缠度量。纠缠度的形式的距离,我们从一个适应应用的Fubini研究度量。该测度在局域么正变换下是不变的,并定义为我们导出的一个合适的度量--纠缠度量$\tilde{g}$的迹。此外,$\tilde{g}$的本征值的分析给出了有关纠缠的鲁棒性的信息。

英文摘要:

We propose a measure of entanglement that can be computed for any pure state of an $M$-qubit system. The entanglement measure has the form of a distance that we derive from an adapted application of the Fubini-Study metric. This measure is invariant under local unitary transformations and defined as trace of a suitable metric that we derive, the entanglement metric $\tilde{g}$. Furthermore, the analysis of the eigenvalues of $\tilde{g}$ gives information about the robustness of entanglement.

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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