Dresden 2026 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 18: Focus Session: Relaxation Timescales in Open Quantum Systems (joint session TT/DY)

TT 18.4: Topical Talk

Monday, March 9, 2026, 16:45–17:15, CHE/0089

Nonequilibrium thermodynamics of time-dependent quantum transport — •Janine Splettstoesser — Chalmers University of Technology, Gothenburg, Sweden

Quantum transport induced by time-dependent driving fields is not only of interest when considering the conductor’s charge response. On the contrary, in recent years there has been strong interest in the thermodynamics and energetic properties of quantum conductors. By applying time-dependent driving fields to a conductor cyclic quantum heat engines can be implemented and quantum properties can be used to rapidly load and discharge so-called quantum batteries.

In this presentation, I will first show how different time-scales in the response of a quantum dot impact the (energy) decay of a quantum dot brought out of equilibrium. This is visible both in the relative entropy, where Coulomb interaction results in an anomalous decay referred to as Mpemba effect [1], as well as in the geometric properties of a slowly driven cyclic engine [2]. I will then show how the precision of time-dependently driven engines is bounded by the produced or dissipated power [3].
[1] J. Graf, J. Splettstoesser, J. Monsel, J. Phys.: Condens. Matter 37, 195302 (2025)
[2] J. Monsel, J. Schulenborg, Th. Baquet, J. Splettstoesser, Phys. Rev. B 106, 035405 (2022)
[3] L. Tesser, J. Balduque, J. Splettstoesser, arXiv:2509.07583 (2025)

Keywords: Time-dependent driving; Decays dynamics; Quantum thermodynamics; Noise bounds