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Entanglement Classification of Four-partite States under the SLOCC

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arxiv 1701.04155 v3 pith:ZLQVBZOK submitted 2017-01-16 quant-ph

Entanglement Classification of Four-partite States under the SLOCC

classification quant-ph
keywords classificationentanglementfour-partitestatesbipartiteslocctripartiteunder
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We present a practical classification scheme for the four-partite entangled states under stochastic local operations and classical communication (SLOCC). By transforming a four-partite state into a triple-state set composed of two tripartite and one bipartite states, the entanglement classification is reduced to the classification of tripartite and bipartite entanglements. This reduction method has the merit of involving only the linear constrains, and meanwhile providing an insight into the entanglement character of the subsystems.

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