# Generalized trace-distance measure connecting quantum and classical non-Markovianity

@article{Wissmann2015GeneralizedTM, title={Generalized trace-distance measure connecting quantum and classical non-Markovianity}, author={S. Wissmann and B. Vacchini and Heinz-Peter Breuer}, journal={Physical Review A}, year={2015}, volume={92}, pages={042108} }

We establish a direct connection of quantum Markovianity of an open quantum system to its classical counterpart by generalizing the criterion based on the information flow. Here, the flow is characterized by the time evolution of Helstrom matrices, given by the weighted difference of statistical operators, under the action of the quantum dynamical evolution. It turns out that the introduced criterion is equivalent to P-divisibility of a quantum process, namely divisibility in terms of positive… CONTINUE READING

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