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- W4312219626 abstract "We discuss a model of a closed quantum evolution of two qubits where the joint Hamiltonian is so chosen such that one of the qubits acts as a bath and thermalizes the other qubit which is acting as the system. The corresponding exact master equation for the system is derived. Interestingly, for a specific choice of parameters the master equation takes the Gorini-Kossakowski-Lindblad-Sudarshan (GKLS) form, with constant coefficients representing pumping and damping of a single qubit system. Based on this model we construct an Otto cycle connected to a single qubit bath and study its thermodynamic properties. Our analysis goes beyond the conventional weak coupling scenario and illustrates the effects of finite baths, including non-Markovianity. We find closed form expressions for efficiency (coefficient of performance), power (cooling power) for the heat engine regime (refrigerator regime), and for different modifications of the joint Hamiltonian." @default.
- W4312219626 created "2023-01-04" @default.
- W4312219626 creator A5012564531 @default.
- W4312219626 creator A5045294338 @default.
- W4312219626 creator A5062893349 @default.
- W4312219626 date "2022-12-26" @default.
- W4312219626 modified "2023-09-26" @default.
- W4312219626 title "Strongly coupled quantum Otto cycle with single qubit bath" @default.
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- W4312219626 doi "https://doi.org/10.1103/physreve.106.064133" @default.
- W4312219626 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36671160" @default.
- W4312219626 hasPublicationYear "2022" @default.
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