Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 56: Poster III
Q 56.18: Poster
Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof
A K-Rb setup for studying Fermions in optical flux lattices — •Lucia Duca1,2, Tracy Li1,2, Monika Schleier-Smith1,2, Martin Reitter1,2, Josselin Bernardoff1,2, Hendrik Lüschen1,2, Martin Boll1,2, Jens Phillip Ronzheimer1,2, Immanuel Bloch1,2, and Ulrich Schneider1,2 — 1Fakultät für Physik, Ludwig-Maximilians-Universität, 80799 München, Germany — 2Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
We present an apparatus for studying a two-dimensional degenerate Fermi gas in the presence of a strong artificial magnetic field. In this double species experiment, fermonic 40K atoms are first sympathetically cooled to quantum degeneracy in a bath of bosonic 87Rb atoms. The fermions are then adiabatically compressed into a single layer of a 1D-lattice, creating an isolated 2D system.
The artificial magnetic field will be realized by means of an optical flux lattice [1], which combines a spatially varying Raman coupling with a spin-dependent potential. Their combination produces a magnetic length on the order of the optical wavelength. This high-magnetic-flux system is a good candidate to access the quantum Hall regime with ultracold atoms.
We present our plans for implementing the optical flux lattice and characterizing its topological character by probing its band structure. The current status of this experimental setup and our novel 2D lattice configuration are also presented.
[1] N.R. Cooper, Phys. Rev. Lett. 106, 175301 (2011).