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Article

Entropy Production in Non-Markovian Collision Models: Information Backflow vs. System-Environment Correlations

1
Department of Physics, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul 34469, Turkey
2
TEBIP High Performers Program, Board of Higher Education of Turkey, Istanbul University, Fatih, Istanbul 34452, Turkey
3
Faculty of Arts and Sciences, Department of Physics, İzmir University of Economics, İzmir 35330, Turkey
4
College of Engineering and Natural Sciences, Bahçeşehir University, Beşiktaş, Istanbul 34353, Turkey
*
Authors to whom correspondence should be addressed.
Academic Editor: Francesco Ciccarello
Entropy 2022, 24(6), 824; https://doi.org/10.3390/e24060824
Received: 26 April 2022 / Revised: 10 June 2022 / Accepted: 12 June 2022 / Published: 14 June 2022
(This article belongs to the Special Issue Quantum Collision Models)
We investigate the irreversible entropy production of a qubit in contact with an environment modelled by a microscopic collision model in both Markovian and non-Markovian regimes. Our main goal is to contribute to the discussions on the relationship between non-Markovian dynamics and negative entropy production rates. We employ two different types of collision models that do or do not keep the correlations established between the system and the incoming environmental particle, while both of them pertain to their non-Markovian nature through information backflow from the environment to the system. We observe that as the former model, where the correlations between the system and environment are preserved, gives rise to negative entropy production rates in the transient dynamics, the latter one always maintains positive rates, even though the convergence to the steady-state value is slower as compared to the corresponding Markovian dynamics. Our results suggest that the mechanism underpinning the negative entropy production rates is not solely non-Markovianity through information backflow, but rather the contribution to it through established system-environment correlations. View Full-Text
Keywords: entropy production; open quantum systems; collision models entropy production; open quantum systems; collision models
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MDPI and ACS Style

Şenyaşa, H.T.; Kesgin, Ş.; Karpat, G.; Çakmak, B. Entropy Production in Non-Markovian Collision Models: Information Backflow vs. System-Environment Correlations. Entropy 2022, 24, 824. https://doi.org/10.3390/e24060824

AMA Style

Şenyaşa HT, Kesgin Ş, Karpat G, Çakmak B. Entropy Production in Non-Markovian Collision Models: Information Backflow vs. System-Environment Correlations. Entropy. 2022; 24(6):824. https://doi.org/10.3390/e24060824

Chicago/Turabian Style

Şenyaşa, Hüseyin T., Şahinde Kesgin, Göktuğ Karpat, and Barış Çakmak. 2022. "Entropy Production in Non-Markovian Collision Models: Information Backflow vs. System-Environment Correlations" Entropy 24, no. 6: 824. https://doi.org/10.3390/e24060824

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