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Q: Fachverband Quantenoptik und Photonik

Q 25: Poster – Cold Atoms and Molecules, Matter Waves (joint session Q/A/MO)

Q 25.56: Poster

Dienstag, 11. März 2025, 14:00–16:00, Tent

Observation of an integer quantum Hall state of six fermions — •Johannes Reiter, Paul Hill, Philipp Lunt, Jonas Drotleff, Maciej Galka, and Selim Jochim — Physikalisches Institut, Universität Heidelberg, Deutschland

Integer and fractional quantum Hall states underpin the understanding of topological phases of matter featuring exotic macroscopic properties such as the quantization of the transverse resistivity and emergence of robust edge currents.

Expanding upon our deterministic preparation of a spinful two-particle Laughlin state [arXiv:2402.14814], we present the recent observation of an integer quantum Hall state of six rapidly rotating fermions confined in a tight optical tweezer. Momentum-space imaging of the many body density reveals the hallmark uniform flattening of the particle density distribution and provides access to the microscopic correlations. This measurement demonstrates the scalability of our atom-by-atom assembly technique of quantum hall states and opens new avenues for probing the microscopic dynamics of topological phase transitions.

Keywords: quantum hall; laughlin state; optical tweezer; topological phases of matter; fermions