Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 32: Poster: Quantum gases, ultracold atoms and molecules

Q 32.47: Poster

Mittwoch, 19. März 2014, 16:30–18:30, Spree-Palais

Beyond Artificial Graphene with Ultracold Fermions in a Tunable-Geometry Optical Lattice — •Gregor Jotzu, Thomas Uehlinger, Michael Messer, Remi Desbuquois, Daniel Greif, and Tilman Esslinger — Institute for Quantum Electronics, ETH Zurich, 8093 Zurich, Switzerland

Ultracold fermions in optical lattices offer the possibility to simulate the behaviour of solids and explore regimes which are not accessible in current materials. We have created an articifial Graphene-like system and study how it can be driven from the usual Dirac-metal state to various insulating states (including the first implementation of a 2D Mott-insulator of fermions) by changing interactions, on-site energies or the tunneling structure. We present recent results on the behaviour of static and dynamic observables in insulating regimes.