Starts 16 Jul 2025 10:30
Ends 16 Jul 2025 11:30
Central European Time
Joint ICTP/University of Trieste CMSP Seminar: Structural Transition within Two-Dimensional Supersolids of Quantum-Stabilized Dipolar Gases
Lagrange Lecture Hall (Leonardo Building) and via Zoom
Lauriane Chomaz
(University of Heidelberg, Germany)
Abstract:
Ultracold atomic gases offer a rich platform for studying quantum many-body effects thanks to their high degree of control and tunability. Ultracold gases of highly dipolar atoms exhibit unique interaction properties leading to striking behaviors at the mean-field level and beyond [1]. A decade ago, a universal stabilization mechanism driven by quantum fluctuations was discovered in these gases. This mechanism prevents the system from collapsing and allows exotic states of matter to arise. These include ultradilute quantum droplets, crystallized quantum states, and, notably, supersolids, which combine the antithetical properties of (super)fluids and solids [2]. After reviewing the physics of dipolar gases and their stabilized states, I will present our ongoing experimental and theoretical work investigating a structural phase transition within two-dimensional supersolids, aiming to better understand the richness of the underlying phase diagram.
[1] L. Chomaz et al., "Dipolar physics: A review of experiments with magnetic quantum gases,” Rep. Progr. Phys. 86, 026401 (2023).[2] L. Chomaz, "Quantum-stabilized states in magnetic dipolar quantum gases” arXiv:2504.06221 (2025).