Geometry of quantum states: new construction of positive maps
Quantum Physics
2015-05-13 v1
Abstract
We provide a new class of positive maps in matrix algebras. The construction is based on the family of balls living in the space of density matrices of n-level quantum system. This class generalizes the celebrated Choi map and provide a wide family of entanglement witnesses which define a basic tool for analyzing quantum entanglement.
Keywords
Cite
@article{arxiv.0902.0885,
title = {Geometry of quantum states: new construction of positive maps},
author = {Dariusz Chruscinski and Andrzej Kossakowski},
journal= {arXiv preprint arXiv:0902.0885},
year = {2015}
}
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11 pages