Data di Pubblicazione:
2018
Citazione:
Entropy production and correlations in a controlled non-Markovian setting / M. Popovic, B. Vacchini, S. Campbell. - In: PHYSICAL REVIEW A. - ISSN 2469-9926. - 98:1(2018 Jul 23), pp. 012130.012130-1-012130.012130-8. [10.1103/PhysRevA.98.012130]
Abstract:
We study the relationship between (non-)Markovian evolutions, established correlations, and the entropy production rate. We consider a system qubit in contact with a thermal bath and in addition the system is strongly coupled to an ancillary qubit. We examine the steady-state properties finding that the coupling leads to effective temperatures emerging in the composite system, and show that this is related to the creation of correlations between the qubits. By establishing the conditions under which the system reaches thermal equilibrium with the bath despite undergoing a non-Markovian evolution, we examine the entropy production rate, showing that its transient negativity is a sufficient sign of non-Markovianity.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Atomic and Molecular Physics, and Optics
Elenco autori:
M. Popovic, B. Vacchini, S. Campbell
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