SKM 2021 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 11: Many-Body Quantum Dynamics II (joint session DY/TT)
DY 11.4: Vortrag
Donnerstag, 30. September 2021, 10:45–11:00, H2
Superradiant many-qubit absorption refrigerator — Michal Kloc1, Kurt Meier1, Kimon Hadjikyriakos2, and •Gernot Schaller3 — 1Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland — 2Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany — 3Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany
We show that the lower levels of a large-spin network with a collective anti-ferromagnetic interaction and collective couplings to three reservoirs may function as a quantum absorption refrigerator. In appropriate regimes, the steady-state cooling current of this refrigerator scales quadratically with the size of the working medium, i.e., the number of spins. The same scaling is observed for the noise and the entropy production rate.
[1] arXiv:2106.04164