Research InterestsWe develop and utilize time-resolved and nonlinear optical techniques in both the terahertz (THz) and optical frequency regimes to study and control properties of materials broadly known as ''quantum materials.’’ In this class of matter, collective phases and properties defy a classical description, often leading to an exotically rich range of emergent phenomena. Recent examples include the observation of the topological magneto-electric effect and "axion electrodynamics" in bulk-insulating 3D topological insulators, the discovery of giant second harmonic generation in Weyl semimetals, evolution of magnons across a quantum phase transition in Kitaev magnets and spatial imaging of nematic orders in Iron-based superconductors. Our ultimate goals are to understand/discover new physics of these materials and to control them by light or strain or electrical gating to apply them to the next generation of quantum computers, solar cells and memory devices.
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Department of Physics & Astronomy
University of Pennsylvania 209 S 33rd St Philadelphia, PA 19104 |
liangwu@sas.upenn.edu
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OFFICE: +1 (215) 898-3566
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