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arXiv · 1204.0293

Unification of multi-qubit polygamy inequalities

Jeong San Kim
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Abstract

We establish a unified view of polygamy of multi-qubit entanglement. We first introduce a two-parameter generalization of entanglement of assistance namely unified entanglement of assistance for bipartite quantum states, and provide an analytic lowerbound in two-qubit systems. We show a broad class of polygamy inequalities of multi-qubit entanglement in terms of unified entanglement of assistance that encapsulates all known multi-qubit polygamy inequalities as special cases. We further show that this class of polygamy inequalities can be improved into tighter inequalities for three-qubit systems.

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Jeong San Kim. 2012-04-02. Unification of multi-qubit polygamy inequalities. https://doi.org/10.1103/physreva.85.032335

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