2020/05/27 by C. Rupprecht, M. Klaas, H. Knopf +10 · 8 citations
Engineering · Physics and Astronomy · #Coupling (piping) #Coupling strength #Exciton #Heterojunction #Monolayer #Oscillator strength #Plasmonic and Surface Plasmon Research #Polariton #Quantum Electrodynamics and Casimir Effect #Strong Light-Matter Interactions #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · open access · doi:10.1364/oe.392821
published in Optics Express 28(13), 18649 (Optica Publishing Group)
openalex publication_date 2020/05/27 · openalex created_date 2020/07/23 · arxiv created 2020/07/29 · arxiv updated 2020/07/30 · openalex updated_date 2026/08/05
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 WSe 2 /hBN/WSe 2 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.