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Friday, January 28, 2022
11:00 AM - 12:00 PM
Online Event

IQIM Postdoctoral and Graduate Student Seminar

Floquet engineering of quantum materials on demand
Junyi Shan, Graduate Student, Hsieh Group,

Abstract: Tuning properties of quantum materials with light has a long history - from simple heating to driving selective excitations inside the materials. While many novel optical engineering mechanisms have been proposed, there has been a gap regarding the experimental realizations of light modulating material properties without being absorbed, i.e., the Floquet engineering strategy. In this seminar, I will discuss our recent experiments on using light to Floquet engineer van der Waals materials in a heating-free manner. We achieved reversible control of the nonlinear optical properties and the bandgap size of the antiferromagnetic insulator MnPS3 on a timescale of 100 femtoseconds. I will also discuss how we can combine this Floquet principle and the versatile material platforms in order to create new phases of matter out of equilibrium.

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For more information, please contact Marcia Brown by phone at 626-395-4013 or by email at