SAMOP 2023 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 22: Poster II

Q 22.58: Poster

Dienstag, 7. März 2023, 16:30–19:00, Empore Lichthof

Few fermions in an arbitrary potential — •Jonas Herkel, Sandra Brandstetter, Carl Heintze, Keerthan Subramanian, and Selim Jochim — Physikalisches Institut, University Heidelberg, Germany

Fermionic quantum systems with a tuneable atom number have proven to be a viable platform for exploring the emergence of many-body phenomena. In our experiment we are able to prepare a fermionic few-body system of 6Li atoms by spilling a two dimensional trap.

We use two different matter wave optic techniques to achieve single atom resolution. Combined with our spin resolved imaging technique, this allows for the examination of correlations between atoms in different spin states. A non interacting expansion maps the initial momenta to real space. For real space imaging we use a technique similar to (1), which combines the evolution in two harmonic potentials with different trapping frequencies, to magnify the spatial distribution. These imaging techniques allows us to explore hydrodynamic behavior of the few body limit.

We plan to setup a digital-micro-mirror-device (DMD) in a compact and modular way. The DMD will allow us to form nearly arbitrary uniform potentials, with a blue detuned laser. One possible application is a double box to explore the transport physics of a small number of atoms. The fast dynamics of the DMD additionaly allows for dynamic potentials, which could be utilized to explore collectivity of few atoms.
(1) Asteria et al. Nature 599, 571*575 (2021).
https://doi.org/10.1038/s41586-021-04011-2