1201.5995 (Gniewomir Sarbicki et al.)

A class of exposed indecomposable positive maps    [PDF]

Gniewomir Sarbicki, Dariusz Chruściński

Exposed positive maps in matrix algebras define a dense subset of extremal maps. We provide a class of indecomposable positive maps in the algebra of 2n x 2n complex matrices with n>1. It is shown that these maps are exposed and hence define the strongest tool in entanglement theory to discriminate between separable and entangled states.

View original: http://arxiv.org/abs/1201.5995