Mainz 2026 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 42: Poster – Ultracold Matter (joint session Q/A)

Q 42.16: Poster

Wednesday, March 4, 2026, 17:00–19:00, Philo 2. OG

Experimental realization of quantum Hall states with few rotating fermions — •Paul Hill, Johannes Reiter, Maciej Galka, and Selim Jochim — Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg (Germany)

Integer and fractional quantum Hall states constitute topological phases of matter featuring exotic macroscopic properties such as the quantization of the transverse resistivity and emergence of 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. Furthermore, we discuss how to explore topological transitions between integer and fractional quantum hall states with our platform, and how off diagonal elements of the density matrix, in the form of probability currents, can be measured.

Keywords: Quantum Hall effect; Quantum phase transition; Topological Matter