Biswajit Datta1,Florian Dirnberger1,Rezlind Bushati1,2,Vinod Menon1,2
The City College of New York1,The City University of New York2
Biswajit Datta1,Florian Dirnberger1,Rezlind Bushati1,2,Vinod Menon1,2
The City College of New York1,The City University of New York2
Strong light-matter interaction results in the formation of half-light half-matter quasiparticles (polaritons) that take on the advantages of both. The advent of van der Waals magnets that host electronic excitations (excitons) correlated to the magnetic order presents a unique opportunity to implement strong light-matter coupling and thereby manipulate electronic and spin degrees of freedom via light. Here we report our recent works on such strongly coupled exciton polaritons that are correlated with the underlying magnetic order. Specifically, we will discuss the formation of polaritons in antiferromagnetic insulator NiPS3 and the use of polariton nonlinear spectroscopy to shed light on the nature of excitons in this system [1]. Following this, we will discuss our work on magnetic semiconductors and the potential to modify magneto-optical response via strong exciton-photon coupling.<br/>[1] F. Dirnberger, R. Bushati, B. Datta, A. Kumar, A. H. MacDonald, E. Baldini, V. M. Menon, "Spin-correlated exciton-polaritons in a van der Waals magnet", Nature Nanotechnology 17, 1060–1064 (2022)