Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 56: Poster III
Q 56.46: Poster
Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof
Elastic and inelastic collisions of single neutral impurity atoms immersed in an ultracold cloud — •Farina Kindermann1,2, Nicolas Spethmann1,2, Dieter Meschede2, and Artur Widera1 — 1FB Physik, TU Kaiserslautern, Erwin Schrödinger Str. 46, 67663 Kaiserslautern — 2Institut für angewandte Physik, Universität Bonn, Wegelerstr. 8, 53115 Bonn
Recently hybrid systems immersing single atoms in a many body system have been a subject of intense interest. Here we present an example of controlled doping of an ultracold Rubidium cloud with single neutral Cesium impurity atoms. We observe thermalization of 'hot' Cs atoms by elastic interaction with an ultracold Rb gas, employing different schemes of measuring the impurities' energy distribution. Inelastic collisions are restricted to a single three-body recombination channel allowing us to precisely determine the three-body loss coefficient in good agreement with theory.
The poster will present details of the experimental setup, sequence and data analysis needed to extract the interspecies scattering length and three-body loss coefficient from the thermalization dynamics and loss rates measured.