学术报告（2023年12月18日10:00）：Hybrid photonic materials for enhanced light-matter interaction and device functionality

主持人：周张凯 教授

报告简介：Photonic cavities are man-made resonant structures that can confine light in space, typically in the form of standing waves with certain resonance frequencies. Probably the earliest developed cavity system is a pair of mirrors, termed Fabry–Pérot cavity, which is an indispensable component of lasers and interferometers. While such cavities at the macro-scale are important for many optical devices, they really become shining at the micro- and nanoscale, as exemplified by photonic microcavities made of low-loss dielectric materials and plasmonic nanocavities comprised of resonant metallic nanostructures. In this seminar, I will show our recent discovery of light-induced electromagnetic asymmetry in symmetry-broken plasmonic nanocavities and its critical role in surface second-harmonic generation. I will then demonstrate that marrying these small-scale photonic cavities with either photo-switchable molecules or low-dimensional quantum materials can realize several high-performance functional photonic and optoelectronic devices. Finally, I will share my perspectives on unleashing the full potential of hybrid cavity-quantum-materials paradigms for single-molecule quantum sensing, quantum light emission and quantum information processing.

报告人简介：Dangyuan LEI is Professor of Materials Science and Engineering at City University of Hong Kong and Provost’s Visiting Professor of Physics at Imperial College London. He received a PhD degree in Physics from Imperial College London in 2011, with his thesis awarded the Anne Thorne PhD Thesis Prize. His current research interest centers on plasmonic nanophotonics and low-dimensional quantum materials, with particular interest in the nanoscale cavity-matter interaction and applications in miniaturized photonic and optoelectronic devices for on-chip optical sensing and imaging, energy harvesting, conversion, storage and saving. He has co-authored 220 publications, received 12000 citations and an h-index of 63 (Google Scholar as of December 2023), and given 1 plenary talk, 6 keynote speeches and >100 invited talks. His publications include 8 Nature Communications, 2 Science Advances, 5 NPG Light: Science & Applications, 4 Physical Review Letters, 25 Advanced (Functional/Energy/Optical) Materials, and 25 Nano Letters and ACS Nano etc. Three publications have been highlighted as “Editor’s Choice” of Science (2020) and “Research Highlights” of Nature Materials (2010 & 2011), respectively. He is an elected member of the Hong Kong Young Academy of Sciences, an OSA Senior Member, a member of SPIE, IOP and PSHK, and a National Science and Technology Expert of MOST.