Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 40: Quantum gases: Optical lattices II
Q 40.6: Vortrag
Mittwoch, 20. März 2013, 15:15–15:30, A 310
A new lattice setup for a three-component Fermi gas — •Mathias Neidig, Martin Ries, Andre N. Wenz, Puneet Murthy, Thomas Lompe, and Selim Jochim — Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg
Strongly interacting degenerate three-component Fermi gases are expected to show interesting many-body physics such as the formation of an atomic colour superfluid. However, studying such systems has so far been inhibited by large three-body loss rates. This limitation could be overcome via quantum Zeno loss blocking in a periodic potential. In this talk we present our progress towards realizing a three-component system in a single layer two-dimensional optical lattice.
We have transferred a quantum degenerate two-component gas of 6Li atoms from an optical dipole trap into a stack of pancake shaped potentials with a spacing of about 4 µ m which are formed by the interference pattern of two far off-resonant beams. Using tomographic radio frequency spectroscopy, we can show that we load the atoms into less than five pancakes. In the next step we will optimize this transfer such that we load only one pancake. By adding perpendicular lattice beams and transferring atoms into the third accessible hyperfine state we should then be able to produce a stable, strongly interacting three-component Fermi gas.