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A: Fachverband Atomphysik

A 42: Poster Session IIIb

A 42.11: Poster

Donnerstag, 8. März 2018, 16:15–18:15, Zelt Ost

Expansion dynamics of strongly attractive few-fermion systems — Vincent Klinkhamer, •Ralf Klemt, Jan Hendrik Becher, Andrea Bergschneider, Philipp M. Preiss, Gerhard Zürn, and Selim Jochim — Physikalisches Institut, Universität Heidelberg

In this talk, we present correlation measurements in an expanding and attractively interacting few-body system of fermionic 6Li atoms. We prepare deterministic few-body systems in optical microtraps and then release the atoms into a weaker external confinement. After a time-of-flight expansion, we measure both the position and hyperfine state of each atom with single-atom-resolution. In these measurements, we observe strong correlations between the atoms, depending both on the interaction strength and the confinement potential during the expansion. We explain the expansion dynamics with unitary time evolution and connect it to the fluid-dynamic description of strongly coupled quantum fluids.