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Collective Strong Light-Matter Coupling in Hierarchical Microcavity-Plasmon-Exciton Systems

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dc.abstract.enPolaritons are compositional light-matter quasiparticles that arise as a result of strong coupling between the vacuum field of a resonant optical cavity and electronic excitations in quantum emitters. Reaching such a regime is often hard, as it requires materials possessing high oscillator strengths to interact with the relevant optical mode. Two-dimensional transition metal dichalcogenides (TMDCs) have recently emerged as promising candidates for realization of strong coupling regime at room temperature. However, these materials typically provide coupling strengths in the range of 10–40 meV, which may be insufficient for reaching strong coupling with low quality factor resonators. Here, we demonstrate a universal scheme that allows a straightforward realization of strong coupling with 2D materials and beyond. By intermixing plasmonic excitations in nanoparticle arrays with excitons in a WS2 monolayer inside a resonant metallic microcavity, we fabricate a hierarchical system with the collective microcavity–plasmon–exciton Rabi splitting exceeding ∼500 meV at room temperature. Photoluminescence measurements of the coupled systems show dominant emission from the lower polariton branch, indicating the participation of excitons in the coupling process. Strong coupling has been recently suggested to affect numerous optical- and material-related properties including chemical reactivity, exciton transport, and optical nonlinearities. With the universal scheme presented here, strong coupling across a wide spectral range is within easy reach and therefore exploration of these exciting phenomena can be further pursued in a much broader class of materials.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorBisht, Ankit
dc.contributor.authorWersäll, Martin
dc.contributor.authorAntosiewicz, Tomasz
dc.contributor.authorCuadra, Jorge
dc.contributor.authorShegai, Timur
dc.contributor.authorCanales, Adriana
dc.date.accessioned2024-01-24T19:31:55Z
dc.date.available2024-01-24T19:31:55Z
dc.date.issued2019
dc.description.financeNie dotyczy
dc.description.number1
dc.description.volume19
dc.identifier.doi10.1021/ACS.NANOLETT.8B03639
dc.identifier.issn1530-6984
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/103235
dc.identifier.weblinkhttps://pubs.acs.org/doi/10.1021/acs.nanolett.8b03639
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofNano Letters
dc.relation.pages189-196
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enStrong plasmon-exciton coupling
dc.subject.enTMDC
dc.subject.enmonolayer WS2
dc.subject.encollective Rabi splitting
dc.titleCollective Strong Light-Matter Coupling in Hierarchical Microcavity-Plasmon-Exciton Systems
dc.typeJournalArticle
dspace.entity.typePublication