Berlin 2008 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 10: Internal Symposium: Controlling Dirty Bosons: Disorder Effects on BECs

DY 10.5: Hauptvortrag

Dienstag, 26. Februar 2008, 11:20–11:50, MA 001

Disorder in ultracold Fermi-Bose quantum gas mixtures — •Klaus Sengstock — Institut für Laserphysik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg

The physics of ultracold gases and Bose-Einstein condensates allows various connections to other fields of physics. Especially the physics of degenerate quantum gases in optical lattices shows similarities to condensed matter systems. Prominent examples are the Mott-insulator transition and e.g. the ferromagnetic and polar phases of Bose Einstein condensates in lattices as well as effects of disorder.

This talk will give an overview on quantum gas physics in optical lattices and focus on the simultaneous trapping of mixtures of fermionic and bosonic atoms in optical lattice potential. We observe e.g. a strong influence of a small concentration of fermionic Potassium atoms on the coherence properties of bosonic Rubidium atoms in a 3D-optical lattice.