Demonstration of a polariton step potential by local variation of light-matter coupling in a van-der-Waals heterostructure

Optics Express
C RupprechtC Schneider

Abstract

The large oscillator strength of excitons in transition metal dichalcogenide layers facilitates the formation of exciton-polariton resonances for monolayers and van-der-Waals heterostructures embedded in optical microcavities. Here, we show, that locally changing the number of layers in a WSe2/hBN/WSe2 van-der-Waals heterostructure embedded in a monolithic, high-quality-factor cavity gives rise to a local variation of the coupling strength. This effect yields a polaritonic stair case potential, which we demonstrate at room temperature. Our result paves the way towards engineering local polaritonic potentials at length scales down to atomically sharp interfaces, based on purely modifying its real part contribution via the coherent light-matter coupling strength g.

References

Sep 29, 2006·Nature·J KasprzakLe Si Dang
Dec 8, 2009·Science·K G LagoudakisB Deveaud-Plédran
Oct 9, 2015·Nature Communications·S DufferwielA I Tartakovskii
Sep 20, 2016·Scientific Reports·L C FlattenJ M Smith
Nov 1, 2016·Nature Communications·Nils LundtChristian Schneider
Nov 15, 2016·Reports on Progress in Physics·C SchneiderS Höfling
May 5, 2017·Nature Communications·Archana RajaAlexey Chernikov
Jul 14, 2018·Nature Communications·Christian SchneiderBernhard Urbaszek
Jan 5, 2019·Physical Review Letters·Holger SuchomelChristian Schneider

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Citations

Nov 6, 2021·Nature Communications·Hangyong ShanCarlos Antón-Solanas

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