Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 7: Ultra-cold atoms, ions and BEC I (with A)
Q 7.4: Vortrag
Montag, 18. März 2013, 12:00–12:15, B 305
A novel 2D-confinement scheme for ultracold 40K atoms — •Martin Reitter1,2, Lucia Duca1,2, Tracy Li1,2, Josselin Bernardoff1,2, Henrik Lüschen1,2, Monika Schleier-Smith1,2, 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 report on a novel scheme for compressing an ultracold cloud of 40K atoms into a single two-dimensional layer. The use of a single layer not only provides an analog to two-dimensional electron gases in condensed matter systems, but also allows for direct imaging of the atom cloud without the typical averaging effects due to the integration along the line-of-sight. A standard approach to compressing atoms into a single two-dimensional plane is to load them into a deep vertical lattice and remove atoms from all but one lattice plane. During this procedure, however, a significant number of atoms is lost. To overcome this disadvantage, we realize a vertical lattice with a dynamically variable lattice constant. By continuously changing the confinement, we will be able to compress almost all atoms held in a crossed-beam dipole trap into a single two-dimensional layer. Subjecting this two-dimensional system to an artificial gauge field will enable studies of topologically ordered states of fermions.