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arXiv · 1111.2012

Exposed positive maps: a sufficient condition

Dariusz Chruściński·Gniewomir Sarbicki
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Abstract

Exposed positive maps in matrix algebras define a dense subset of extremal maps. We provide a sufficient condition for a positive map to be exposed. This is an analog of a spanning property which guaranties that a positive map is optimal. We analyze a class of decomposable maps for which this condition is also necessary.

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Dariusz Chruściński, Gniewomir Sarbicki. 2011-11-08. Exposed positive maps: a sufficient condition. https://doi.org/10.1088/1751-8113/45/11/115304

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