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Mainz 2017 – scientific programme

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A: Fachverband Atomphysik

A 26: Poster Session II

A 26.5: Poster

Wednesday, March 8, 2017, 17:00–19:00, P OG1

Single Cesium Atoms Interacting with an Ultracold Rubidium Bath — •Steve Haupt1, Daniel Mayer1, 2, Felix Schmidt1, 2, Tobias Lausch1, Daniel Adam1, Michael Hohmann1, Farina Kindermann1, Nicolas Spethmann1, and Artur Widera1, 21Department of Physics, University of Kaiserslautern, Erwin-Schrödinger-Str. 46, 67663 Kaiserslautern , Germany — 2Graduate School Materials Science in Mainz, Gottlieb-Daimler-Str. 42, 67663 Kaiserslautern, Germany

We immerse single neutral Cesium (133Cs) atoms into an ultra cold Rubidium (87Rb) cloud and study their dynamics. Tight external control over the Cs atoms’ degrees of freedom as well as high-resolution single atom imaging allows studying various quantum phenomena and applications. This includes cooling dynamics of impurity atoms employed as quantum bits or the realisation of polaronic quasi-particles.

We will review the recent developments in gaining further independent control over the two species, including species-selective optical trapping as well as various measures to deduce the temperature of single atoms. This allows employing single atoms as local, non-destructive temperature probes for an ultracold gas, yielding access to the local thermalisation dynamics within the bath.

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