Stuttgart 2012 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 40: Poster: Ultra-cold atoms, ions and BEC
A 40.15: Poster
Donnerstag, 15. März 2012, 16:30–19:00, Poster.V
Few-fermion systems in multiple well potentials — •Vincent Klinkhamer1,2, Friedhelm Serwane1,2, Thomas Lompe1,2, Gerhard Zürn1,2, Andre Wenz1,2, and Selim Jochim1,2 — 1Max-Planck-Institut für Kernphysik, Heidelberg — 2Physikalisches Institut, Heidelberg
With our current experimental setup it is possible to reliably prepare systems with up to 10 fermionic 6Li atoms in a single optical microtrap. The inter-particle coupling can be tuned to study interacting few-particle systems inside the potential. We will extend the current setup in order to create a small array of such microtraps which will allow us to explore systems in periodic potentials. We present our progress creating this setup. The multiple wells will be created using a high resolution objective with a NA of 0.6 which is optimized for two wavelengths, 1064nm and 671nm. The high numerical aperture ensures a high detection efficiency of the fluorescence signal at 671nm. Starting point of our experiments will be a ground state system in one microtrap. It will be split adiabatically into a multiple well potential using a 2-D acousto-optical deflector. With this setup one can examine the tunneling behavior of the particles leading to magnetic ordering in an ultracold Fermi gas.