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DY: Fachverband Dynamik und Statistische Physik

DY 15: Statistical Physics far from equilibrium

DY 15.7: Vortrag

Mittwoch, 28. März 2012, 11:30–11:45, MA 004

Quantum cold ion heat engine at maximal efficiency — •Obinna Abah¹, Sebastian Deffner², Georg Jakob³, Johannes Rossnagel³, Kilian Singer³, Ferdinard Schmidt-Kaler³, and Eric Lutz^1,4 — ¹Department of Physics, University of Augsburg, D-86135 Augsburg, Germany — ²Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 USA — ³Institut für Quantenphysik, Universität Mainz, D-55128 Mainz, Germany — ⁴Dahlem Center for Complex Quantum Systems, Freie Universität Berlin, D-14195 Berlin-Dahlem, Germany

We propose an experimental realizable quantum Otto heat engine working with a single ion in a segmented linear Paul trap. We analyze the theoretical efficiency at maximum power for adiabatic and nonadiabatic processes, both in the limit of high and low temperatures. We moreover present results from numerical simulations with realistic parameters.