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Regensburg 2010 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 29: Spatially Extended Dynamical Systems

DY 29.8: Talk

Thursday, March 25, 2010, 15:45–16:00, H46

Directed transport in phase-modulated driven lattices — •Christoph Petri1, Florian Lenz1, Fotis Diakonos2, and Peter Schmelcgher11Zentrum für Optische Quantentechnologien, Universität Hamburg — 2Department of Physics, University of Athens

An analysis of the dynamics of non-interacting particles in a phase-modulated one-dimensional lattice formed by laterally oscillating square potentials is presented. Depending on the properties of the modulation a desymmetrization of phase space occurs, which is based on breaking locally time- reverse and space-invert symmetries. This yields a directed current of particles, whose direction and magnitude is tunable by varying the parameters of the system. Furthermore, the particles show different localization behavior depending on their spatial position if the global height of the potential is chosen appropriately.

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