IQ / RQMP

Angel Rubio

Universidad del País Vasco

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https://umontreal.zoom.us/j/98762992846?pwd=dFY1ZktDaXQvMzlFNGZRL3cxUngwQT09

Meeting ID:987 6299 2846

Passcode:229839

Angel Rubio– MaxPlanck, Flatiron Institute, EHU

Jeudi le4 Mars / Thursday, March 4

10h30 –11h30

Zoom lien / link: https://umontreal.zoom.us/j/98762992846?pwd=dFY1ZktDaXQvMzlFNGZRL3cxUngwQT09

Meeting ID: 987 6299 2846

Passcode: 229839

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Description:

Angel Rubio

Max Planck Institute for the Structure and Dynamics ofMatter, Luruper Chaussee 149, 22761 Hamburg, Germany; Center for Computational Quantum Physics FlatironInstitute, Simons Foundation, 10010 NY, USANano-Bio Spectroscopy group and ETSF, Universidad delPaís Vasco UPV/EHU, San Sebastián , Spain

Cavity QED quantum materials engineering

Résumé / Abstract:

We provide an overview ofhow well-established concepts in the fields of quantum chemistry and materialshave to be adapted when the quantum nature of light becomes important. We willpursue the question of whether it is possible to create these new states ofmaterials as groundstates of the system. To this end, we will show how theemerging (vacuum) dressed states resemble Floquet states in driven systems. Aparticular appeal of light dressing is the possibility to engineer symmetrybreaking which can lead to novel properties of materials. Strong light–mattercoupling in cavities provides a pathway to break fundamental materialssymmetries, like time-reversal symmetry in chiral cavities. We will discuss thepotential to realize non-equilibrium states of matter that have so far beenonly accessible in ultrafast and ultrastrong laser-driven materials. Weillustrate the realisation of those ideas in molecular complexes and 2Dmaterials and show that the combination of cavity-QED and 2D twisted van der Waalsheterostructures provides a novel and unique platform for the seamlessrealisation of a plethora of interacting quantum phenomena, including exoticand elusive correlated and topological phases of matter. We will brieflyintroduce our newly developed quantum electrodynamics density-functionalformalism (QEDFT) as a first-principles framework to predict, characterize andcontrol the spontaneous appearance of ordered phases of strongly interactinglight-matter hybrids.

Bio: Angel Rubio is theDirector of the Theory Department of the Max Planck Institute for the Structureand Dynamics of Matter and Distinguish Research Scientist at the SimonsFoundation’s Flatiron Institute (NY, USA). He is also Professor/Chair for condensedmatter physics at the University of the Basque Country in San Sebastián, Spain.He received his PhD in Physics in 1991 from the University of Valladolid (UVA).He worked as post-doctoral researcher at University of California at Berkeley(1992-94). Between 1994 and 2001 he was an Associate Professor at the UVA.Diverse Professorships at the École Polytechnique Paris-Saclay, the FreieUniversität Berlin and the Université de Montpellier followed. After beingappointed with a Full Professorship in 2001, he moved to San Sebastián andstarted at the University of the Basque Country (UPV/EHU) as Chair of CondensedMatter Physics and director of the Nano-Bio Spectroscopy Group. In August 2014he accepted the position as Director of the Max Planck Institute for theStructure and Dynamics of Matter in Hamburg, Germany. He is one of the foundersof the European Theoretical Spectroscopy Facility (ETSF) and the originator ofthe widely used ab initio open-source project Octopus. Rubio is a Fellow of theAmerican Physical Society and the American Association for the Advancement ofScience, member of the Academia Europaea, European Academy of Sciences and aforeign associate member of the National Academy of Sciences. His work has beenrecognized by several awards, including the 2018 Max Born medal and prize, 2016Medal of the Spanish Royal Physical Society, the 2014 Premio Rey Jaime I forbasic research, the 2006 DuPont Prize in nanotechnology, the 2005 FriedrichWilhelm Bessel Research Award of the Humboldt Foundation, and two EuropeanResearch Council advanced grants (2011 and 2016).

His research interests arerooted in the modeling and theory of electronic and structural properties ofcondensed matter as well as in the development of new theoretical tools toinvestigate the electronic response of materials, 2D materials, nanostructures,and hybrid materials to external electromagnetic fields. He is acknowledged asa pioneer and leader in the area of computational materials physics and one ofthe founders of modern “theoretical spectroscopy” in the last years he haspioneered the development of the theoretical framework of “quantumelectrodynamical density functional theory (QEDFT)” that enables the ab-initiomodeling of strong light-matter interaction phenomena in materials,nanostructures, and molecules. (opening the new fields of QED-Chemistry orpolaritonic chemistry).