Freiburg 2024 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 24: Poster II

Q 24.17: Poster

Dienstag, 12. März 2024, 17:00–19:00, KG I Foyer

A new experimental platform to explore dipolar quantum phenomena in ultracold gases of magnetic atoms — Shuwei Jin, Jianshun Gao, Karthik Chandrashekara, Christian Gölzhäuser, Sarah Philips, Joschka Schöner, and •Lauriane Chomaz — Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226

Ultracold quantum gases of highly magnetic atoms, such as dysprosium (Dy), have opened new avenues for the study of quantum phenomena. In particular, they bring into play the competition of anisotropic long-range dipole-dipole interactions, tunable short-range contact interactions, geometry, mean-field and beyond-mean-field effects. Mastering these competitions has led to the discovery of novel many-body quantum states in recent years, including liquid-like droplets, droplet crystals, and supersolids.

With my new group at the University of Heidelberg, we have designed and implemented a novel compact setup in which we have successfully produced large quantum degenerate gases of bosonic Dy atoms, achieved fine control of the dipolar and contact interactions, and are currently mastering their imaging with submicron resolution. We plan to load these quantum degenerate gases into tailorable traps that cross from 3D to 2D and have versatile in-plane potentials. Here I will present the design and implementation of our novel experimental setup, report on our recent achievements, and discuss prospective investigations we plan to undertake both in and out of equilibrium.

Keywords: magnetic atoms; dipole-dipole interactions; supersolids; low dimensions; phase transitons