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Partial transposition as a direct link between concurrence and negativity

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Eltschka, Christopher ; Tóth, Géza ; Siewert, Jens
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Date of publication of this fulltext: 29 Apr 2015 10:17


Detection of entanglement in bipartite states is a fundamental task in quantum information. The first method to verify entanglement in mixed states was the partial-transpose criterion. Subsequently, numerous quantifiers for bipartite entanglement were introduced, among them concurrence and negativity. Surprisingly, these quantities are often treated as distinct or independent of each other. The ...


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