Quantum-Geometrical Design Principles for Correlated Electrons and Photons

02.06.2025 13:00 – 14:30

Recent advances in two-dimensional and moiré quantum materials have revealed a panoply of states of matter which challenge established paradigms for strongly correlated electron systems. In this talk, I will provide a perspective on how electronic band geometry and topology can shape many-body states in quantum materials as well as their interactions with light. I will first describe how recent experiments on twisted MoTe₂ and WSe₂ van der Waals bilayers can realize a new class of topological Mott insulators, which reconcile strong Coulomb interactions with a band-topological obstruction via the formation of an emergent Kondo lattice, albeit with a topological twist. I will then argue that the interplay of quantum geometry and strong electronic interactions can be diagnosed via low-frequency optical conductivity measurements. More broadly, quantum geometry can provide new design principles for achieving strong coupling of photons and correlated matter, with implications ranging from enhanced optical nonlinearities to light-induced control of materials.

Lieu

Bâtiment: Ancienne Ecole de médecine

AEM 74

entrée libre