Valley-polarized Hyperbolic-Exciton-Polaritons in 2D Semiconductors

Tomer Eini, Tal Asherov, Yarden Mazor, Itai Epstein

Research output: Contribution to journalConference articlepeer-review


In this work, we predict the existence of hyperbolic-exciton-polaritons (HEPs) in 2D semiconductors of transition-metal-dichalcogenides (TMDs) at visible frequencies. We show that hyperbolicity can be induced in the layered material owing to the behavior of the excitons supported by the TMD, therefore leading to the existence of HEPs. We derive the HEPs dispersion relation, analyzing their confinement and loss properties and finding the HEPs' wavelengths are about two orders of magnitude smaller than the corresponding free-space wavelength. Furthermore, we show that the existing HEPs are coupled to the valley degree-of-freedom, leading to a hyperbolic spin-valley hall effect.

Original languageEnglish
Article numberFM1A.4
JournalOptics InfoBase Conference Papers
StatePublished - 2022
EventCLEO: QELS_Fundamental Science, QELS 2022 - San Jose, United States
Duration: 15 May 202220 May 2022


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