Physics Colloquium: Topological and nonlinear nanophotonics
Physics Colloquium
Topological and nonlinear nanophotonics
Dr. Li He
Research Associate, Dept. of Physics and Astronomy
University of Pennsylvania
Event Details:
In recent decades, topology has become a central theme in condensed matter physics, with the most notable achievement being the discovery of topological insulators. Extending these ideas to photonics has uncovered new photonic topological states, enabling new ways to control the flow of light. However, crucial properties unique to photonic systems – such as optical nonlinearity and light-matter interactions – have often been overlooked in prior studies. In this talk, I will present our recent work to address these gaps. First, I will discuss advancements in realizing nonlinear photonic topological insulators in time-modulated photonic crystals. Next, I will explore how integrating 2D quantum materials with nanophotonics gives rise to topological and nonlinear exciton-polaritons. Finally, I will highlight the transformative potential of these phenomena for all-optical information processing, including on-chip polaritonic neural networks and quantum polaritonics.
Bio:
Li He is currently a research associate in the Department of Physics and Astronomy at the University of Pennsylvania. He received his Ph.D. degree in Physics from University of Minnesota in 2018, M.S. degree in electrical engineering from University of Washington in 2012, B.S. degree in Optics from Zhejiang University in 2010. His current research focuses on quantum nanophotonics, topological photonics and 2D quantum materials.
Intended Audience:
All are Welcome!
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Event Snapshot
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