Hannover 2010 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 58: Quantum Gases: Lattices II

Q 58.3: Vortrag

Freitag, 12. März 2010, 11:00–11:15, E 001

Localization of cold atoms in state-dependent optical lattices via a Rabi pulse — •Birger Horstmann1, Stephan Dürr1, Ignacio Cirac1, and Tommaso Roscilde1,21Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany — 2Laboratoire de Physique - ENS Lyon, 46 Alle d'Italie, 69007 Lyon, France

We propose a novel realization of Anderson localization in excited states of ultracold atoms trapped in state-dependent optical lattices. The disorder potential leading to localization is generated with a Rabi pulse which transfers a fraction of the atoms into a different internal state for which tunneling between lattice sites is suppressed. These frozen atoms create a quantum superposition of different random potentials, localizing the atoms. We investigate the dynamics of the mobile atoms after the Rabi pulse for non-interacting and weakly interacting bosons, as well as for infinitely repulsive bosons in one dimension.

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DPG-Physik > DPG-Verhandlungen > 2010 > Hannover