Quantum dynamical semigroups and non-decomposable positive maps

Details Quantum dynamical semigroups and non-decomposable positive maps Quantum dynamical semigroups and non-decomposable positive maps

2004-01-23

arxiv.org/abs/quant-ph/0401146v1

Physics

Quantum Physics

16 pages, LaTeX

Scientific paper

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.

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