Tuning non-Markovianity by spin-dynamics control

Salvatore Lorenzo*, Francesco Plastina, Mauro Paternostro

*Corresponding author for this work

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Abstract

We study the interplay between forgetful and memory-keeping evolution enforced on a two-level system by a multi-spin environment whose elements are 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 by parameters such as the mismatch between the energy of the two-level system and of the spin environment. For a symmetric coupling, the amount of non-Markovianity surprisingly grows with the number of decoherence channels. DOI: 10.1103/PhysRevA.87.022317

Original languageEnglish
Article number022317
Number of pages7
JournalPhysical Review A (Atomic, Molecular, and Optical Physics)
Volume87
Issue number2
DOIs
Publication statusPublished - 13 Feb 2013

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