Institute of Physics, Chinese Academy of Science

报告人简介

Ling Lu is a group leader in the Institute of Physics, Chinese Academy of Sciences, Beijing China. He obtained his bachelor in Physics from Fudan University, and a Ph.D. in Electrical Engineering from University of Southern California where he worked on photonic crystal nanocavity lasers. He was a postdoc at Massachusetts Institute of Technology, where he and colleagues coined “topological photonics” and discovered “Weyl points”. He was awarded the Chen Ning Yang Award by the Asian Pacific Societies, Pei Yuan Zhou Award by the Chinese Physics Society, and the Highly Cited Researchers by Clarivate Web of Science. His group is developing the “hypergap” materials and two topological devices, the topological-cavity surface-emitting laser (TCSEL) and the topological microwave isolator.

报告摘要

Despite three Nobel prizes, topological physics has yet to find its device applications. Here, we propose a topological principle for isolators by leveraging the one-way edge states. We design and experimentally validate such a topological isolator, achieving isolation > 100 dB around 10 GHz. Its record-high isolation surpasses that of five commercial junction isolators connected in series. Given the ubiquity of isolators in technologies from mobile base stations and radars to quantum computing, our work has the potential for broad impact.

Gang Wang, Ling Lu. "Topological microwave isolator with >100-dB isolation"

Nature Photonics 19, 1064 (2025)

报告地点：物理所怀柔园区MA楼224会议室

邀请人：李永庆  研究员

联系人：孙丽（18601300418）

主办单位：中国科学院物理研究所应用物理中心