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27 Oct 2021
10:00 am - 11:00 am
Professor Xiaoqin (Elaine) Li, Professor of Physics, University of Texas-Austin
Meeting ID: 883 1736 6970 Passcode: 12345
When two atomically thin van der Waals (vdW) layers are vertically stacked together, the atomic alignment between the layers exhibits periodical variations, leading to a new type of in-plane superlattices known as the moiré superlattices. The twist angle controls the size of the moiré supercells and acts as a unique knob to control the material properties. In this talk, I will discuss how new excited states (excitons and phonons) emerge in highly tunable semiconductor moiré superlattices. I will speculate on new and exciting directions relevant to quantum information science based on these materials.
Prof. Li’s research focuses on studies of the quantum dynamics of electrons. To meet the technical and societal challenges of the new millennium, scientists need to learn how to control material properties at the level of electrons. They use and develop a variety of optical spectroscopy tools such as correlated single photon counting, Brillouin light scattering, and multidimensional ultra-fast spectroscopy to probe electron dynamics in nanostructures. Their research is relevant for applications in opto-electronics, quantum electronics, and quantum information processing.
This talk is part of an ongoing series of talks by US and Australian researchers presenting novel developments in condensed matter and cold atomic physics, enriching connections between the two physics communities. Co-presented by FLEET, Monash School of Physics and Astronomy, and the Joint Quantum Institute.