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arXiv · 2101.02260

A Triangle Governs Genuine Tripartite Entanglement

Songbo Xie·Joseph H. Eberly
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Abstract

A previously overlooked constraint for the distribution of entanglement in three-qubit systems is exploited for the first time and used to reveal a new genuine tripartite entanglement measure. It is interpreted as the area of a so-called concurrence triangle and is compared with other existing measures. The new measure is found superior to previous attempts for different reasons. A specific example is illustrated to show that two tripartite entanglement measures can be inequivalent due to the high dimensionality of the Hilbert space.

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Songbo Xie, Joseph H. Eberly. 2021-01-06. A Triangle Governs Genuine Tripartite Entanglement. https://doi.org/10.1103/physrevlett.127.040403

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