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arXiv · 0804.3620

A note on generalized concurrences and entanglement detection

Laura Cattaneo·Domenico D'Alessandro
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Abstract

We study generalized concurrences as a tool to detect the entanglement of bipartite quantum systems. By considering the case of 2 X 4 states of rank 2, we prove that generalized concurrences do not, in general, give a necessary and sufficient condition of separability. We identify a set of entangled states which are undetected by this method.

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Laura Cattaneo, Domenico D'Alessandro. 2008-07-23. A note on generalized concurrences and entanglement detection. https://arxiv.org/abs/0804.3620

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