报告题目：Cavity materials engineering: How photons change the properties of matter

报 告 人：Angel Rubio，中国科学院外籍院士

报告时间：2024年10月19日16：00  

报告地点：物理楼（附中南侧）W101

内容摘要：We provide an overview of how well-established concepts in the fields of quantum chemistry and materials have to be adapted when the quantum nature of light becomes important. We will pursue the question whether it is possible to create these new states of materials as ground states of the system. To this end we will show how the emerging (vaccum) dressed states resemble Floquet states in driven systems. A particular appeal of light dressing is the possibility to engineer symmetry breaking which can lead to novel properties of materials. Strong light-matter coupling in cavities provides a pathway to break fundamental materials symmetries, like time-reversal symmetry in chiral cavities. We will discuss the potential to realize non-equilibrium states of matter that have so far been only accessible in ultrafast and ultrastrong laser-driven materials. We illustrate the realisation of those ideas in molecular complexes (polaritonic chemistry) and 2D materials and show that the combination of cavity-QED and 2D twisted van der Waals heterostructures provides a novel and unique platform for the seamless realisation of a plethora of interacting quantum phenomena, including exotic and elusive correlated and topological phases of matter. We will briefly introduce our newly developed quantum electrodynamics density-functional formalism (QEDFT) as a first principles framework to predict, characterize and control the spontaneous appearance of ordered phases of strongly interacting light-matter hybrids.

报告人简介：Angel Rubio教授，德国马克斯普朗克物质结构与动力学研究所所长，美国西蒙斯基金会Flatiron研究所杰出研究科学家，德国汉堡大学教授。研究领域涉及凝聚态物理中非平衡新奇物态、拓扑和强关联材料的探索与描述，材料电子结构性质的理论建模及非平衡态光与物质相互作用模拟，主导开发了被广泛使用的含时密度泛函计算软件包OCTOPUS。共发表700余篇出版物，引用次数超过80000次，36篇论文被评为“高被引论文”，入选爱思唯尔高被引学者。Rubio教授2014年当选美国科学院外籍院士，2016年当选欧洲人文和自然科学院院士，2020年当选欧洲科学院院士，2022年当选柏林-勃兰登堡科学与人文学院院士，并于2023年当选德国国家科学院院士和中科院外籍院士，获得了包括西班牙布拉斯·卡布雷拉国家研究奖（2023年）、马克斯–玻恩奖（2018年）、西班牙皇家物理学会金奖（2016年）在内的多个国际著名奖项。