Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 57: Poster 3: Quantengase, Ultrakalte Atome, Ultrakalte Moleküle, Materiewellen Optik, Präzisionsmessungen, Metrologie
Q 57.55: Poster
Donnerstag, 17. März 2011, 16:30–19:30, P1
A New Setup for Probing Bose-Fermi Mixtures in Optical Lattices — •Tracy Li1, Lucia Duca1, Martin Boll1, Jens Phillip Ronzheimer1, Ulrich Schneider1, and Immanuel Bloch1, 2 — 1Fakultät für Physik, Ludwig-Maximilians-Universität, 80799 München, Germany — 2Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
Degenerate Bose-Fermi mixtures consist of different atomic species with different quantum-statistics. The interactions between these particles can give rise to a rich variety of effects such as novel quantum phases or polaron physics. In particular, by trapping Bose-Fermi mixtures in optical lattices, we can create a controlled and versatile model system for probing condensed-matter phenomena.
In the experiment, the atoms will be lasercooled using a combination of a 2D+ [1] and 3D magneto-optical traps (MOTs). We present and characterize a new design for a 2D+MOT of 87Rb and 40K. The 2D+MOT generates a collimated, continuous beam of atoms for more efficient loading into the two-species 3D MOT. After the MOTs, the mixture is magnetically transported into a glass cell, where sympathetic and evaporative cooling to simultaneous quantum degeneracy occur first in a plugged quadrupole trap and then in a crossed dipole trap. We present the current status of this experiment.
[1] Dieckmann et.al., PRA 58, 3891 (1998).