Salvatore Lorenzo, Francesco Plastina, Mauro Paternostro
We study the interplay between forgetful and memory-keeping evolution enforced on a single two-level system by a multi-spin environment whose elements are in turn coupled to local bosonic baths. Contrarily to the expectation that any non-Markovian effect would be buried by the forgetful mechanism induced by the spin-bath coupling, one can actually induce a full Markovian-to-non-Markovian transition of the two-level system's dynamics, controllable through accessible parameters such as the energy mismatch between the two-level system and the spin environment.
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http://arxiv.org/abs/1205.4535
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