{
  "abstract": "Entanglement and nonclassicality are two fundamental features of quantum mechanics which serve as resources in quantum information processing tasks and are tightly connected by two-mode mixing. In this work, we show that the connection between entanglement and nonclassicality extends well beyond the two-mode mixing setting by considering the case of arbitrary multimode Gaussian evolutions. Using the Narcowich-Wigner spectrum as our main technical tool to quantify single-mode phase-space nonclassicality, we derive sufficient conditions for a single-mode state to generate NPT entanglement after a multimode Gaussian unitary evolution, which both tighten and generalize existing criteria. As an application, we obtain simple single-mode protocols for quantitatively testing the entanglement structure of multimode quantum states over arbitrary bipartitions. Our results identify the Narcowich-Wigner spectrum as a powerful tool for investigating fundamental properties of bosonic quantum states.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.03544",
  "author_total": 8,
  "authors": [
    {
      "name": "Massimo Frigerio"
    },
    {
      "name": "Zacharie Van Herstraeten"
    },
    {
      "name": "Hania Herbi"
    },
    {
      "name": "Jack Davis"
    },
    {
      "name": "Nuno C. Dias"
    },
    {
      "name": "João N. Prata"
    },
    {
      "name": "Mattia Walschaers"
    },
    {
      "name": "Ulysse Chabaud"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5wt91njqbf5xf.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.03544",
  "fulltext_url": null,
  "id": "5wt91njqbf5xf",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.03544",
  "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",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.03544",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5wt91njqbf5xf.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:21:04Z",
      "native_id": "2611.03544",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.03544"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Unifying entanglement and nonclassicality via the Narcowich-Wigner spectrum",
  "title_text": "Unifying entanglement and nonclassicality via the Narcowich-Wigner spectrum",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:21Z",
  "url": "https://research.draconitic.com/paper/5wt91njqbf5xf",
  "venue": "arXiv",
  "versions": []
}