Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

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

Q 32.36: Poster

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

Towards ultracold fermions in a 2D honeycomb lattice — •Thomas Paintner, Daniel Hoffmann, Michael Griener, Jochen Gleiter, Wladimir Schoch, Wolfgang Limmer, Benjamin Deissler, and Johannes Hecker Denschlag — Institut für Quantenmaterie, Universität Ulm, Deutschland

We are setting up a new experiment with ultracold fermionic atoms in a two-dimensional honeycomb lattice to investigate intriguing phenomena which are either related to relativistic quantum physics (e.g. Zitterbewegung, Klein tunnelling) or to condensed matter physics (quantum phases, quantum criticality). This system has the underlying geometry of graphene, but can be tuned and controlled in a much greater range. Fermionic 6Li atoms are captured in a magneto-optical trap and loaded into a strong optical dipole trap. In the next steps, the atoms will be transferred optically into a glass cell and loaded into a 2D optical trap created by blue-detuned laser beam with a TEM01 mode. We will present the experimental progress towards a two-dimensional degenerate Fermi gas, as well as results on the projection of a honeycomb potential created with a holographic phase plate.