{
  "abstract": "Large-area, optically homogeneous monolayer semiconductors are a critical prerequisite for scalable room-temperature polaritonics and for realizing polariton lattices extending across many unit cells. Yet, the small size, optical inhomogeneity, and device-to-device variability of conventional exfoliated flakes have remained major obstacles. Here, we overcome these limitations using 1-dodecanol-encapsulated WS$_2$ monolayers that combine millimeter-scale coverage with remarkably uniform optical properties over lateral distances approaching $300\\,$$μ\\mathrm{m}$. Integrated into a tunable open microcavity, these monolayers exhibit robust room-temperature exciton-photon strong coupling, evidenced by a pronounced anti-crossing and a Rabi splitting of $\\hbar Ω_{\\mathrm{R}} \\approx 31\\,\\mathrm{meV}$. Leveraging the exceptional uniformity of this platform, we realize a two-dimensional polaritonic kagome lattice and directly resolve its characteristic band structure. Angle-resolved spectroscopy reveals Dirac dispersive bands together with a weakly dispersive flat-band-like branch within the $s$-band, in good agreement with a linear non-interacting model. Complementary momentum- and real-space imaging further identifies the associated bond-centered and site-centered mode profiles. These results establish large-area WS$_2$ monolayers in open microcavities as a scalable platform for engineering polariton band structures and exploring synthetic quantum materials under ambient conditions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.07587",
  "author_total": 14,
  "authors": [
    {
      "name": "Shiyu Huang"
    },
    {
      "name": "Sander Scheel"
    },
    {
      "name": "Jiang Qu"
    },
    {
      "name": "Johannes Düreth"
    },
    {
      "name": "Dominik Horneber"
    },
    {
      "name": "Edith Wietek"
    },
    {
      "name": "Simon Widmann"
    },
    {
      "name": "Libo Ma"
    },
    {
      "name": "Monika Emmerling"
    },
    {
      "name": "Martin Kamp"
    },
    {
      "name": "Simon Betzold"
    },
    {
      "name": "Alexey Chernikov"
    },
    {
      "name": "Sven Höfling"
    },
    {
      "name": "Sebastian Klembt"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/a6x5dsf6bg0jp.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.07587",
  "fulltext_url": null,
  "id": "a6x5dsf6bg0jp",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.07587",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mes-hall"
    ],
    [
      "openalex",
      "3107|Strong Light-Matter Interactions"
    ]
  ],
  "openalex": "W7211994252",
  "pdf_url": "https://arxiv.org/pdf/2609.07587",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/a6x5dsf6bg0jp.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:48Z",
      "native_id": "2609.07587",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.07587"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Encapsulated macroscopic WS$_2$ monolayers enable room-temperature exciton-polariton lattices",
  "title_text": "Encapsulated macroscopic WS_2 monolayers enable room-temperature exciton-polariton lattices",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:48Z",
  "url": "https://research.draconitic.com/paper/a6x5dsf6bg0jp",
  "venue": "arXiv",
  "versions": []
}