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All Entanglements in a Multipartite System

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arxiv quant-ph/0201079 v3 pith:2KFHWMO5 submitted 2002-01-18 quant-ph

All Entanglements in a Multipartite System

classification quant-ph
keywords entanglementsentanglementloccmultipartitereversiblesystemaverageclassical
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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For a multipartite system, we sort out all possible entanglements, each of which is among a set of subsystems. Each entanglement can be measured by a generalized relative entropy of entanglement, which is conserved on average under reversible local operations and classical communication (LOCC) defined for all the parties. Then we derive a series of inequalities of different entanglements that have to be satisfied by any pure state which can be generated by reversible LOCC from the set of all GHZ-like states.

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