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Strong exciton-photon interaction in van der Waals materials

February 7, 2022 - 11:00am
Speaker: 
Vinod Menon
Institution: 
City College of New York

Abstract: Strong exciton-photon interaction results in the formation of half-light half-matter quasiparticles called exciton-polaritons (EPs) that take on the properties of both its constituents. In this talk, I will first introduce polariton formation in 2D semiconductors  [1] followed by a discussion of Rydberg excitons [2] and dipolar excitons  [3] to realize highly nonlinear interactions to achieve polariton blockade. Following this, I will discuss the use of strain to control exciton flow and nonlinear response  [4].  Finally, I will present some recent results on EPs in correlated van der Waals materials and their potential to realize hybridization between excitons, photons and magnons.

[1]X. Liu et al., Nat. Photonics 9, 30 (2015).

[2]J. Gu et al., Nat. Commun. 12, 2269 (2021).

[3]B. Datta et al., ArXiv2110.13326 (2021).

[4]F. Dirnberger et al., Sci. Adv. 7, 3066 (2021).

 

JQI Seminars are held on Mondays during Fall and Spring semesters at 11:00 a.m. Eastern Time in Room 2400 of the Atlantic Building. University of Maryland affiliates may participate using Zoom. The seminars are also livestreamed on the JQI YouTube channel (https://www.youtube.com/user/JQInews), which supports audience participation in the chat interface.

 

ATL 2400
20742