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Q: Fachverband Quantenoptik und Photonik

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

Q 42.22: Poster

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

Towards Fermionic Systems with Dipolar Interactions — •Paula Seyfert, Tim Pohlmann, Ximeng Song, Lennart Naeve, Lennart Hoenen, Philipp Lunt, and Lauriane Chomaz — Physikalisches Institut (Universität Heidelberg), Im Neuenheimer Feld 226, 69120 Heidelberg

We are constructing a new experimental platform to study spin-polarized fermionic systems with strong dipolar interactions under the microscope. The competition of the Fermi energy with the long-range dipolar interactions, alongside the high degree of control on atom number, dipolar strength and orientation offer a rich platform to study exotic quantum many-body phenomena [1].

We adapt the species-agnostic modular quantum gas platform [2] originally developed for ⁶Li in the group of Selim Jochim to fermionic ¹⁶¹Dy, which possesses one of the largest magnetic moments (µ=10µ_B). To tackle the more complicated cooling of this lanthanide atom encompassing a complex hyperfine structure, we implement a compact design of a permanent-magnet Zeeman-Slower and 2D MOT. In the science chamber, consisting of a nano-textured glass cell, the final trapping stage will be a core-shell 3D MOT. In this poster, I will showcase the current status of the design and construction.

References: [1] A.-L. Gadsbølle and G. M. Bruun, ’Harmonically trapped dipolar fermions in a two-dimensional square lattice’, Phys. Rev. A 85.2 (Feb. 2012). [2] Tobias Hammel et al., ’Modular quan- tum gas platform’, Phys. Rev. A 111, 033314 (Mar. 2025).

Keywords: fermions; dipolar interactions; modular quantum gas platform; permanent-magnet Zeeman Slower