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报告题目：Light-matter interaction in van der Waals heterostructures: Lamb shift and Purcell effects
报告时间：2025-04-14 10:00
报告人： Mikhail Glazov
Ioffe Institute
报告地点：翔安校区能源材料大楼3号楼会议室2
转播地点：卢嘉锡楼202报告厅
报告摘要：
Light-matter coupling in semiconductors is mediated by the excitons – Coulomb correlated electron hole pairs. The excitons are characterized by two key parameters: the optical transition energy and radiative decay rate. We demonstrate theoretically and illustrate these predictions experimentally that the exciton optical transition energies and radiative decay rates can be efficiently tuned in van der Waals heterostructures based on atomically thin
transition metal dichalcogenides by tailoring the properties of surrounding media. Such tuning is possible via the fundamental quantum electrodynamica Lamb and Purcell effects which result from the coupling of the exciton with the vacuum fluctuations of electromagnetic field. The theory behind these effects is presented. We also discuss the light absorption by ultranarrow excitonic resonances and address the role of electron coupling with chiral phonons in the bright-dark excitons conversion process.
报告人简介：
Mikhail Glazov has been at the Ioffe Institute since 2003. He graduated from the Polytechnical University, St Petersburg, Russia, in 2005 after defense of Master of Physics thesis. He defended both his PhD thesis (2008) and Habilitation thesis (Doctor of Sciences) (2012) at the Ioffe Institute. He has received several awards, including the Medal and Prize for Young Researchers of the Russian Academy of Sciences (2014) and the Euler Prize by the Government of St. Petersburg (2015). In 2016, Glazov was elected to the Russian Academy of Sciences as a corresponding member. His research interests include condensed-matter theory, physics of two-dimensional semiconductors, spin physics, and light–matter coupling effects. He is also a chair of condensed matter physics at the Alferov University in St Petersburg.
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