Mainz 2017 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 31: Poster Session III

A 31.11: Poster

Donnerstag, 9. März 2017, 17:00–19:00, P OG1

Parallel preparation of few body systems with Spatial Light Modulators — •Marvin Holten, Puneet Murthy, Benjamin Claßen, Mathias Neidig, Ralf Klemt, Philipp Preiß, Gerhard Zuern, and Selim Jochim — Physikalisches Institut, University of Heidelberg, Germany

One of the main challenges of quantum simulation with cold atoms is the initialization of the system in the desired state. The most common approach is to cool the atoms in a bulk gas and then transfer them into the desired potential (e.g. an optical lattice). Here, the temperature in the bulk systems sets a lower limit to the temperature in the potential. We want to address this issue with a novel bottom-approach, where a many-body state is assembled from small, individually prepared building blocks.

One of the main challenges of the parallel preparation of small blocks is the creation of tailor-made optical potentials. To this end, we introduced a Spatial Light Modulator (SLM) to our 2D lithium experiment. On this poster, we present first results of atoms trapped inside different potentials created by the SLM. We show how phase-modulation together with several aberration correction methods are used to achieve very accurate light intensity distributions.

Finally, we investigate the utilization of these capabilities for the parallel creation of many double wells, loaded with two fermions each. By adiabatically merging several of these double wells into a larger lattice, we wish to access the fermionic Hubbard model at very low temperature, in the near future.