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DY: Fachverband Dynamik und Statistische Physik

DY 5: Poster Session III: Statistical Physics, Complex Fluids and Soft Matter

DY 5.6: Poster

Dienstag, 28. September 2021, 17:30–19:30, P

Broadband frequency filters with quantum dot chains — •Tilmann Ehrlich¹ and Gernot Schaller^1,2 — ¹Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany — ²Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany

Two-terminal electronic transport systems with a rectangular transmission can violate standard thermodynamic uncertainty relations. This is possible beyond the linear response regime and for parameters that are not accessible with rate equations obeying detailed-balance. Looser bounds originating from fluctuation theorem symmetries alone remain respected. We demonstrate that optimal finite-sized quantum dot chains can implement rectangular transmission functions with high accuracy and discuss the resulting violations of standard thermodynamic uncertainty relations as well as heat engine performance.

[1] arXiv:2103.04322, to appear in PRB