Unified entropy, entanglement measures and monogamy of multi-party entanglement

Details Unified entropy, entanglement measures and monogamy of multi-party entanglement Unified entropy, entanglement measures and monogamy of multi-party entanglement

2011-04-09

arxiv.org/abs/1104.1675v1

J. Phys. A: Math. Theor. 44 295303 (2011)

Physics

Quantum Physics

17 pages, 1 figure

Scientific paper

10.1088/1751-8113/44/29/295303

We show that restricted shareability of multi-qubit entanglement can be fully characterized by unified-$(q,s)$ entropy. We provide a two-parameter class of bipartite entanglement measures, namely unified-$(q,s)$ entanglement with its analytic formula in two-qubit systems for $q\geq 1$, $0\leq s \leq1$ and $qs\leq3$. Using unified-$(q,s)$ entanglement, we establish a broad class of the monogamy inequalities of multi-qubit entanglement for $q\geq2$, $0\leq s \leq1$ and $qs\leq3$.

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