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On the structure of entanglement witnesses and new class of positive indecomposable maps

Dariusz Chruscinski·Andrzej Kossakowski
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Abstract

We construct a new class of positive indecomposable maps in the algebra of 'd x d' complex matrices. Each map is uniquely characterized by a cyclic bistochastic matrix. This class generalizes a Choi map for d=3. It provides a new reach family of indecomposable entanglement witnesses which define important tool for investigating quantum entanglement.

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Dariusz Chruscinski, Andrzej Kossakowski. 2006-06-26. On the structure of entanglement witnesses and new class of positive indecomposable maps. https://arxiv.org/abs/quant-ph/0606211

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