Rostock 2019 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 12: Ultra-cold atoms, ions and BEC

A 12.22: Poster

Dienstag, 12. März 2019, 16:30–18:30, S Fobau Physik

Few ultracold fermions in a two-dimensional trap — •Ram-Janik Petzold — Physikalisches Institut der Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany

Systems of ultracold atoms are one of the best experimental demonstration platforms for the investigation of various quantum phenomena appearing at low temperatures. Such artificial quantum simulators offer a high controllability through tunable interparticle interaction strength, particle density as well as trapping potential, together with a high-fidelity state preparation and detection.

Here a novel experimental setup is presented, which was designed to explore the emergence of many-body quantum effects of ultracold fermion gases in two dimensions starting from the few particle level. It mainly consists of a quasi-two-dimensional optical dipole trap for a system of countable few fermionic ⁶Li atoms. The trap is created by two red-detuned laser beams interfering in their crossing region and providing a strong vertical confinement by a standing wave pattern. An additional single focused beam trap on top of the light-sheet structure allows the independent control over the radial restriction of the harmonic trapping potential. Furthermore, the setup should enable the accurate control over the absolute number of particles in the trap and spin-resolved single-atom detection, which has already been demonstrated in a quasi-one-dimensional configuration.

It is expected, that this experimental simulator will allow the analyses of quantum phenomena in two dimensions by mapping out correlations in position and momentum space.