Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

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

Q 32.39: Poster

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

Spectroscopy of ultracold Fermions in Triangular Optical Lattices using ultranarrow Opical TransitionsAlexander Thobe, •Bastian Hundt, André Kochanke, Thomas Ponath, Niels Petersen, Christoph Becker, and Klaus Sengstock — Zentrum für Optische Quantentechnologien, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany

Quantum gases of two-electron atoms in optical lattices offer exciting new possibilities within the field of ultracold atoms. Especially the spin-independent ground state interaction, as well as the long lived metastable 3P0,2 states allow the realization of novel many-body Hamiltonians.

Here, we report on our recent experiments with ultracold Ytterbium quantum gases in a triangular optical lattice. In our 2D-/3D-MOT setup, we prepare quantum degenerate gases of fermionic 173Yb with 1 to 6 spin components. In order to investigate the interaction properties of the metastable 3P0-state, we perform spectroscopy on the narrow 1S03P0 clock transition of the ultracold atomic sample. To this end, we load the atoms into a triangular optical lattice at the magic wavelength, where the transition is probed with a stable laser system exhibiting a linewidth of a few Hz.

This work is supported by the DFG within the SFB 925 and GRK 1355, the EU FET-Open Scheme (iSense), and the Marie-Curie ITN on Quantum Sensor Technologies and Applications.

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