Separability criteria and bounds for entanglement measures

@inproceedings{Breuer2006SeparabilityCA,
  title={Separability criteria and bounds for entanglement measures},
  author={Hajnalka Breuer},
  year={2006}
}
Employing a recently proposed separability criterion we develop analytical lower bounds for the concurrence and for the entanglement of formation of bipartite quantum systems. The separability criterion is based on a nondecomposable positive map which operates on state spaces with even dimension, N 4, and leads to a class of nondecomposable optimal entanglement witnesses. It is shown that the bounds derived here complement and improve the existing bounds obtained from the criterion of positive… CONTINUE READING

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