Energy backflow in strongly coupled non-Markovian continuous-variable systems

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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2016-12-01
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Language
en
Pages
1-10
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PHYSICAL REVIEW A, Volume 94, issue 6
Abstract
By employing the full counting statistics formalism, we characterize the first moment of energy that is exchanged during a generally non-Markovian evolution in nondriven continuous-variable systems. In particular, we focus on the evaluation of the energy flowing back from the environment into the open quantum system. We apply these results to the quantum Brownian motion, where these quantities are calculated both analytically, under the weak-coupling assumption, and numerically also in the strong-coupling regime. Finally, we characterize the non-Markovianity of the reduced dynamics through a recently introduced witness based on the so-called Gaussian interferometric power and we discuss its relationship with the energy backflow measure.
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Guarnieri , G , Nokkala , J , Schmidt , R , Maniscalco , S & Vacchini , B 2016 , ' Energy backflow in strongly coupled non-Markovian continuous-variable systems ' , Physical Review A , vol. 94 , no. 6 , 062101 , pp. 1-10 . https://doi.org/10.1103/PhysRevA.94.062101