Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
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 Roscilde1,2 — 1Max-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.