{
  "abstract": "We probe the quantum response of plasmonic heterodimers with extended (plane waves) and localized (point dipoles and electron beams) sources. Implementing the surface-response formalism based on Feibelman parameters, we explore nanosphere heterodimers where one particle is characterized by electron spill-in, while the other by spill-out. We identify situations where the two quantum surface corrections that act in opposite spectral-shift directions can cancel out, producing mesoscopic spectra that do not differ from the predictions of the local-response approximation. This picture changes dramatically once localized sources are implemented, allowing one to selectively probe the quantum response of the particles independently. Such probing occurs in terms of higher-order modes in the case of electron beams, or for the complete modal landscape in the case of point dipole sources. This description offers a new insight into the mechanisms governing light--matter interactions in extreme plasmonic architectures, and opens new perspectives for the understanding and tailoring of plasmonic--quantum emitter architectures.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.38870",
  "author_total": 10,
  "authors": [
    {
      "name": "Ida Juliane Bundgaard"
    },
    {
      "name": "Christos Mystilidis"
    },
    {
      "name": "Frederik Wulff Christensen"
    },
    {
      "name": "Lorenz Huber"
    },
    {
      "name": "P. Elli Stamatopoulou"
    },
    {
      "name": "Carsten Rockstuhl"
    },
    {
      "name": "P. A. D. Gonçalves"
    },
    {
      "name": "Ulrich Hohenester"
    },
    {
      "name": "N. Asger Mortensen"
    },
    {
      "name": "Christos Tserkezis"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/37qa4jx3nbpr5.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.38870",
  "fulltext_url": null,
  "id": "37qa4jx3nbpr5",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.38870",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mes-hall"
    ],
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "openalex",
      "2204|Plasmonic and Surface Plasmon Research"
    ]
  ],
  "openalex": "W7215081288",
  "pdf_url": "https://arxiv.org/pdf/2609.38870",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/37qa4jx3nbpr5.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:49Z",
      "native_id": "2609.38870",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.38870"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Surface quantum response of plasmonic heterodimers: revealing the hidden nonlocality",
  "title_text": "Surface quantum response of plasmonic heterodimers: revealing the hidden nonlocality",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:49Z",
  "url": "https://research.draconitic.com/paper/37qa4jx3nbpr5",
  "venue": "arXiv",
  "versions": []
}