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TT: Fachverband Tiefe Temperaturen

TT 35: Focus Session: Correlations in Moiré Quantum Matter I

TT 35.3: Invited Talk

Wednesday, March 29, 2023, 16:00–16:30, HSZ 03

Light-driven phenomena in two-dimensional and correlated quantum materials — •Angel Rubio — Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, 22761 Hamburg, Germany — Center for Computational Quantum Physics Flatiron Institute, Simons Foundation, 10010 NY, USA

We will introduce our newly developed quantum electrodynamics density-functional formalism (QEDFT) as a first principles framework to predict, characterize and control the appearance of ordered phases of strongly interacting light-matter hybrid. We will pursue whether it is possible to create these new states of materials as ground-states of the system. To this end we will show how the emerging (vacuum) dressed states resembles Floquet states in driven systems. Strong light*matter coupling in cavities provides a pathway to break fundamental materials symmetries, like time-reversal symmetry in chiral cavities. We will discuss how to realize non-equilibrium states of matter that have so far been only accessible in ultrafast and ultrastrong laser-driven materials. We illustrate the realization of those ideas in molecules and 2D materials and show that the combination of cavity-QED and 2D twisted vdW heterostructures provides a novel and unique platform for the seamless realization of a plethora of interacting quantum phenomena, including exotic and elusive correlated and topological phases of matter.