Direction Depended Transport in a Hamiltonian Ratchet induced by a time-Dependent Dissipative Impurity

ORAL

Abstract

Ratchets are known to induce directed transport, but in hermitean systems transport strongly depends on the initial conditions which can reduce the ratchet effect dramatically. In this work we both theoretically and experimentally study directed transport in a fast Hamilton ratchet and show that a time-depended dissipative impurity can be used as a direction depended filter. We calculate asymmetric transmission coefficients using Floquet-S-matrix theory and find parameter regions where we the efficiency of the filter is almost ideal.

*Supported by the Deutsche Forschungsgemeinschaft (DFG) via Research Center SFB/TR185 "OSCAR"

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Presenters

  • Christoph Dauer

    • Physics, Technical University of Kaiserslautern
    • Technical University of Kaiserslautern

Authors

  • Zlata Fedorova

    • Rheinische Friedrich-Wilhelms-Universität Bonn

  • Christoph Dauer

    • Physics, Technical University of Kaiserslautern
    • Technical University of Kaiserslautern

  • Anna Sidorenko

    • Rheinische Friedrich-Wilhelms-Universität Bonn

  • Sebastian Eggert

    • Physics, Technical University of Kaiserslautern
    • Technical University of Kaiserslautern

  • Johann Kroha

    • Physikalisches Institut, University of Bonn, Germany
    • Rheinische Friedrich-Wilhelms-Universität Bonn
    • University of Bonn

  • Stefan Linden

    • Rheinische Friedrich-Wilhelms-Universität Bonn