Berlin 2012 – wissenschaftliches Programm
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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 Lutz1,4 — 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.