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Genuine multipartite entanglement measure

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arxiv 2108.03638 v6 pith:UYZ2TNYC submitted 2021-08-08 quant-ph

classification quant-ph
keywords entanglementgenuinemeasuresystemtrianglebipartitefour-partitemultipartite
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abstract

Quantifying genuine entanglement is a crucial task in quantum information theory.In this work, we give an approach of constituting genuine $m$-partite entanglement measures from any bipartite entanglement and any $k$-partite entanglement measure, $3\leq k<m$. In addition, as a complement to the three-qubit concurrence triangle proposed in [Phys. Rev. Lett., 127, 040403], we show that the triangle relation is also valid for any continuous entanglement measure and system with any dimension. We also discuss the tetrahedron structure for the four-partite system via the triangle relation associated with tripartite and bipartite entanglement respectively. For multipartite system that contains more than four parties, there is no symmetric geometric structure as that of tri- and four-partite cases.

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