Quantum thermodynamics of nonadiabatically driven systems: The effect of electron-phonon interaction

Jakob Bätge; Amikam Levy; Wenjie Dou; Michael Thoss

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arXiv · 2206.00937

Quantum thermodynamics of nonadiabatically driven systems: The effect of electron-phonon interaction

Jakob Bätge·Amikam Levy·Wenjie Dou·Michael Thoss

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Abstract

In this work we study the effects of nonadiabatic external driving on the thermodynamics of an electronic system coupled to two electronic leads and to a phonon mode, with and without damping. In the limit of slow driving, we establish nonadiabatic corrections to quantum thermodynamic quantities. In particular, we study the first-order correction to the electronic population, charge-current, and vibrational excitation using a perturbative expansion, and compare the results to the numerically exact hierarchical equations of motion (HEOM) approach. Furthermore, the HEOM analysis spans both the weak and strong system-bath coupling regime and the slow and fast driving limits. We show that the electronic friction and the nonadiabatic corrections to the charge-current provide a clear indicator for the Franck-Condon effect and for non-resonant tunneling processes. We also discuss the validity of the approximate quantum master equation approach and the benefits of using HEOM to study quantum thermodynamics out of equilibrium.

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Jakob Bätge, Amikam Levy, Wenjie Dou, Michael Thoss. 2022-06-02. Quantum thermodynamics of nonadiabatically driven systems: The effect of electron-phonon interaction. https://arxiv.org/abs/2206.00937

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