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Strong exciton-photon interaction in van der Waals materials

February 7, 2022 - 11:00am
Vinod Menon
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 (, which supports audience participation in the chat interface.


ATL 2400