DRAFT

IQIM Postdoctoral and Graduate Student Seminar

Friday, January 28, 2022
11:00am to 12:00pm
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Online Event
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.

Attend by zoom at https://caltech.zoom.us/j/88407627311?pwd=RGx4MlpSUnBLbDJvdE4rS1FHbWZvUT09

For more information, please contact Marcia Brown by phone at 626-395-4013 or by email at marciab@caltech.edu.