题 目：非厄米拓扑系统中的非线性效应以及反常缀饰态
报告人：刘涛 华南理工大学物理与光电学院教授
时 间：2025年12月4日（星期四）上午10：00
地 点：虎溪校区理科楼物理学院 LE201
邀请人：许东辉
报告摘要：Recent years have seen a growing interest in the exploration of unconventional physicalphenomena in non-Hermitian systems. Non-Hermiticity is particularly relevant to continuouslymonitored quantum many-body systems, offering a distinct perspective compared to the master-equation approach, which relies on averaging outcomes. The dynamics governed by non-Hermitianphysics are inherently nontrivial, characterized by features such as point-gap topology and theemergence of the non-Hermitian skin effect. In this talk, I will begin with an overview of non-Hermitianphenomena. I will then present our recent research, focusing on the nonlinearity-driven morphing andcontrol of topological modes, as well as the unique dressed states that arise from atom-photon couplingwithin a non-Hermitian topological bath.
刘涛，华南理工大学物理与光电学院教授。2014年博士毕业于新加坡南洋理工大学，其后分别在新加坡南洋理工大学和日本理化学研究所Franco Norf课题组从事博士后研究，2018年获日本学术振兴会外国人特别研究员。研究方向为量子物质与量子光学，包括拓扑物态、非厄米物理以及波导量子电动力学。已在Physical Review Letters，NatureCommunications以及Physical Review A/B/Research等期刊发表论文50余篇,主持和参与国自然面上和重点项目、广东省重大重点以及珠江人才计划引进创新团队项目等。