Controlling Coherent Light-Matter Interactions in Semiconductors
Max Planck Lecture on Non-Equilibrium Quantum Phenomena
- Date: Mar 10, 2021
- Time: 15:00 - 16:00
- Speaker: Hui Deng
- University of Michigan
- Location: online via Zoom
- Host: Andrea Cavalleri, Angel Rubio
Coherent light-matter interactions provide a powerful means to study and control interacting matter excitations. Using the mature, III-Arsenide semiconductor system, we incoporate a designable photonic crystal mirror to control hybrid light-matter coupled modes (polaritons), and use it to study non-equilibrium quantum orders, including a Bardeen-Cooper-Schrieffer like polariton condensate  and limit cycles self-oscillations  in coupled polariton condensate. The system provides a highly controllable and accessible platform for nonlinear dynamic phenomena and non-equilibrium orders. Using two-dimensional van der Waals crystals with exceptionally strong light-matter interactions and engineering flexibility, we explore a few interesting opportunities enabled by hetero-bilayer transitional metal dichalcogenides (TMDs), including high valley polarizations , lasing in 2D cavities , bright and tunable moiré excitons , and nonlinear moiré quantum-dot array polaritons . Future development in these materials and integration with innovative photonic structure may open doors to many new scientific and technological opportunities.
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Hui Deng received her PhD from Stanford University in 2006. After a postdoctoral position at the California Institute of Technology, she joined the faculty of University of Michigan, Ann Arbor in 2008, where she is currently a full professor. Her current research interests include light-matter interactions and phase transition physics in micro- and nano-photonic structures and van der Waals materials. H. Deng is recipient of the Friedrich Wilhelm Bessel Research Award from the Humboldt Foundation and is a Fellow of the American Physical Society and the Optical Society of America.