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Quantum Geometric Light-Matter Interactions and Optical Control in Correlated and Open Quantum Systems

Date : Friday, March 31st, 2023 10:00 am - 11:00 am Place : On Zoom Lecturer : Martin Claassen Affiliation : The University of Pennsylvania Committee Chair : Takashi Oka (ext.63280)
e-mail: oka@issp.u-tokyo.ac.jp
Language in Speech : English

Irradiation with light provides a powerful tool to interrogate, control or induce new quantum states of matter out of equilibrium, however a microscopic understanding of dynamics and light-matter coupling in solids remains a profound challenge. This talk will discuss three aspects for steering and probing correlated topological matter, dissipative electron systems and superconductors with light. I will show that THz radiation can grant a new quantum-geometric handle to steer correlated quantum materials such as magic-angle twisted bilayer graphene, whereby light dynamically dresses the Wannier functions of interacting electrons which govern the low-energy dynamics. I will then discuss how light can couple to open electronic quantum systems interacting with Markovian reservoirs, to permit a spectroscopic probe of dissipation-engineered Lindbladian band structures and exceptional points in low-dimensional systems. Finally, I will argue that dynamical symmetry breaking with tailored light pulses can explore metastable phases in superconductors with competing instabilities, as a route to stabilize elusive triplet paired states.


(Published on: Monday March 20th, 2023)