SAMOP 2021 – scientific programme
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QI: Fachverband Quanteninformation
QI 7: Quantum Information: Applications
QI 7.3: Talk
Wednesday, September 22, 2021, 11:15–11:30, H4
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