A class of exposed indecomposable positive maps
Quantum Physics
2012-12-11 v3 Mathematical Physics
math.MP
Abstract
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.
Cite
@article{arxiv.1201.5995,
title = {A class of exposed indecomposable positive maps},
author = {Gniewomir Sarbicki and Dariusz Chruściński},
journal= {arXiv preprint arXiv:1201.5995},
year = {2012}
}
Comments
15 pages; slightly improved version