Regensburg 2025 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 15: Quantum Coherence and Quantum Information Systems (joint session TT/DY)
TT 15.10: Talk
Tuesday, March 18, 2025, 12:15–12:30, H31
Quantum thermodynamics of non-Markovian Otto cycles using the principle of minimal dissipation — •Salvatore Gatto1, Alessandra Colla2, Heinz-Peter Breuer1, and Michael Thoss1 — 1University of Freiburg — 2Università degli Studi di Milano
A central challenge in quantum thermodynamics revolves around establishing a consistent and universally accepted definition for work, heat, and entropy production in open quantum systems subjected to thermal reservoirs. A recently developed approach, known as principle of minimal dissipation [1,2], leads to a unique decomposition of the quantum master equation into coherent and dissipative dynamics, allowing to identify uniquely the contributions describing work and heat. In this contribution, we apply this approach to investigate the thermodynamic characteristics of the quantum Otto cycle[3] of a single-impurity Anderson model, with a particular focus on memory effects and strong system-bath couplings. The study uses the hierarchical equations of motion approach (HEOM), which allows a numerically exact simulation of nonequilibrium transport in general open quantum systems involving multiple bosonic and fermionic environments [4].
[1] A.Colla and H.-P.Breuer, Phys Rev.A 105, 052216 (2022).
[2] S.Gatto,A.Colla,H.-P.Breuer,M.Thoss,Phys.Rev.A110,032210(2024)
[3] I.A.Picatoste,A.Colla,H.-P.Breuer, Phys.Rev.Res.6,013258 (2024).
[4] J.Bätge, Y.Ke, C.Kaspar, M.Thoss, Phys.Rev.B 103, 235413 (2021).
Keywords: Quantum thermodynamics; Principle of minimal dissipation; Canonical master equation; Work; Heat