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Concurrence of arbitrary dimensional bipartite quantum states

Kai Chen·Sergio Albeverio·Shao-Ming Fei
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Abstract

We derive an analytical lower bound for the concurrence of a bipartite quantum state in arbitrary dimension. A functional relation is established relating concurrence, the Peres-Horodecki criterion and the realignment criterion. We demonstrate that our bound is exact for some mixed quantum states. The significance of our method is illustrated by giving a quantitative evaluation of entanglement for many bound entangled states, some of which fail to be identified by the usual concurrence estimation method.

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Kai Chen, Sergio Albeverio, Shao-Ming Fei. 2005-07-22. Concurrence of arbitrary dimensional bipartite quantum states. https://doi.org/10.1103/physrevlett.95.040504

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