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arXiv · 1903.11118

Non-monotonic population and coherence evolution in Markovian open-system dynamics

Jan F. Haase·Andrea Smirne·Susana F. Huelga
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Abstract

We consider a simple microscopic model where the open-system dynamics of a qubit, despite being Markovian, shows features which are typically associated to the presence of memory effects. Namely, a non monotonic behavior both in the population and in the coherence evolution arises due to the presence of non-secular contributions, which break the phase covariance of the Lindbladian (semigroup) dynamics. We also show by an explicit construction how such a non-monotonic behaviour can be reproduced by a phase covariant evolution, but only at the price of inserting some state-dependent memory effects.

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Jan F. Haase, Andrea Smirne, Susana F. Huelga. 2019-03-26. Non-monotonic population and coherence evolution in Markovian open-system dynamics. https://doi.org/10.1007/978-3-030-31146-9_4

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