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Positivity and complete positivity in Markovian Gaussian open quantum systems

Room: 204
Speaker: Oliviero Angeli
The proper characterization of positivity of non-unitary dynamical evolutions is a notoriously difficult problem and its relation and boundary with the stronger notion of complete positivity is far from understood. However, for a particular subset of generators of markovian evolution for a gaussian N-mode system we are able to show that complete positivity and the weaker notion of positivity are actually equivalent.

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