Quantum dynamical semigroups and non-decomposable positive maps
arXiv:quant-ph/0401146 · doi:10.1016/j.physleta.2004.04.046
Abstract
We study dynamical semigroups of positive, but not completely positive maps on finite-dimensional bipartite systems and analyze properties of their generators in relation to non-decomposability and bound-entanglement. An example of non-decomposable semigroup leading to a 4x4-dimensional bound-entangled density matrix is explicitly obtained.
16 pages, LaTeX