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

Tomer Eini, Tal Asherov, Yarden Mazor, Itai Epstein

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-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
Title of host publicationCLEO
Subtitle of host publicationQELS_Fundamental Science, QELS 2022
PublisherOptica Publishing Group (formerly OSA)
ISBN (Electronic)9781557528209
StatePublished - 2022
EventCLEO: QELS_Fundamental Science, QELS 2022 - San Jose, United States
Duration: 15 May 202220 May 2022

Publication series

NameOptics InfoBase Conference Papers


ConferenceCLEO: QELS_Fundamental Science, QELS 2022
Country/TerritoryUnited States
CitySan Jose


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