Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 58: Quantum Gases: Lattices II

Q 58.2: Talk

Friday, March 12, 2010, 10:45–11:00, E 001

Dynamic localization in optical lattices — •Matthias Langemeyer, Stephan Arlinghaus, and Martin Holthaus — Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg

The concept of dynamic localization is often disussed theoretically within the framework of a single-band tight-binding model. For possible applications with time-periodically shifted optical lattices, the theoretical ideal is endangered by interband transtions. In this talk we demonstrate with the help of numerical model calculations that nonetheless almost perfect dynamic localization of ultracold atoms in optical lattices can be reached for suitably chosen parameters. This allows one, in particular, to exert active control over the Aubry-Andre-like incommensurability transition which occurrs in bichromatic optical lattices.