Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

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

Q 32.49: Poster

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

Ultracold Fermions in Optical Superlattices — •Pranjal Bordia^1,2, Michael Schreiber^1,2, Frederik Goerg^1,2, Henrik Lueschen^1,2, Sean Hodgman^1,2, Pau Gomez^1,2, Simon Braun^1,2, Immanuel Bloch^1,2, and Ulrich Schneider^1,2 — ¹Ludwig-Maximilians-Universitaet, Muenchen — ²Max-Planck-Institut fuer Quantenoptik, Garching

Quantum simulations using ultracold fermions in optical lattices present many possibilities to study the fermionic Hubbard model in a clean and highly tunable system. In recent years, these systems have been used to study e.g. the fermionic Mott insulator and the various charge dynamics.

We have implemented an optical superlattice along one direction in order to explore different staggered orders. Within individual double wells, it facilitates the observation of singlet-triplet oscillations, and super-exchange interactions for fermionic atoms. Furthermore, this enables us to explore the equilibrium physics as well as the out-of-equilibrium dynamics of e.g. charge-density waves and magnetically ordered states. We report our recent results and future goals.