Mainz 2026 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 43: Poster – Quantum Systems
Q 43.12: Poster
Mittwoch, 4. März 2026, 17:00–19:00, Philo 2. OG
Simulations of superradiance in cold atom experiments — •Rémy Dolbeault1, Arfor Houwman2, Lauriane Chomaz1, Wyatt Kirkby1, Karthik Chandrashekara1, Jianshun Gao1, Christian Gölzhäuser1, Lily Platt1, and Francesca Ferlaino2 — 1Universiy of Heidelberg — 2University of Innsbruck
We present simulations of superradiance in ultracold gases of highly magnetic atoms with specific geometries (lattice or self-ordering droplets).
Superradiance occurs when an initially excited system of interacting atoms decays faster than independent atoms due to the build-up of interatomic correlations. As density (and geometry in the case of anisotropic interactions) plays a key role in the evolution of superradiant systems, two different situations were investigated:
- An optical lattice of Erbium atoms, corresponding to the setup of the Erbium team in Innsbruck, and the diminishing effect of the magnetic dipole-dipole interaction on superradiance
- Quantum droplets of Dysprosium atoms corresponding to the BoDy experiment in Heidelberg
Using a symbolic derivation of the meanfield plus correlations equations from the Lindblad master equation, the simulation of the time evolution of up to 75 atoms can be performed, giving access to first insights into the dynamics of real experimental systems (with atom number typically around 104 atoms).
Keywords: Superradiance; Interacting many-body quantum system; Dipolar gases; Meanfield plus correlations simulations