Parameterized Bipartite Entanglement Measure

Abstract

We propose a novel parameterized entanglement measure $\alpha$-concurrence for bipartite systems. By employing positive partial transposition and realignment criteria, we derive analytical lower bounds for the $\alpha$-concurrence. Moreover, we calculate explicitly the analytic expressions of the $\alpha$-concurrence for isotropic states and Werner states.

arXiv comment8 pages,2 figures

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• Quantifying multipartite quantum states by ($k+1$)-partite entanglement measures
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