{
  "abstract": "Coexistence of classical and quantum light in optical fiber is a key requirement for scalable quantum networks. However, it is fundamentally limited by nonlinear crosstalk from intense classical signals. Hollow-core fiber (HCF), with its intrinsically low optical nonlinearity, offers a promising solution. Here, we experimentally demonstrate the coexistence of polarization-entangled photons with dense wavelength-division multiplexed (DWDM) classical signals with a total launch power of 11.2 dBm, and perform a direct comparison between equal-length single-mode fiber (SMF) and photonic-bandgap-based HCF deployed in a campus network. We observe that HCF suppresses background noise by approximately two orders of magnitude compared to SMF, while preserving high-fidelity entanglement distribution. Our results provide clear experimental evidence of the advantage of HCF and establish its potential as a transmission medium.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.27540",
  "author_total": 10,
  "authors": [
    {
      "name": "Hikaru Shimizu"
    },
    {
      "name": "Arisa Ohno"
    },
    {
      "name": "Mao Miyasugi"
    },
    {
      "name": "Yumeno Seki"
    },
    {
      "name": "Naoyuki Funaoka"
    },
    {
      "name": "Yukari Takada"
    },
    {
      "name": "Aruto Hosaka"
    },
    {
      "name": "Shun Fujii"
    },
    {
      "name": "Hiroyuki Tsuda"
    },
    {
      "name": "Masahiro Takeoka"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4s34yv2dczrjy.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.27540",
  "fulltext_url": null,
  "id": "4s34yv2dczrjy",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.27540",
  "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",
      "1702|Quantum Information and Cryptography"
    ]
  ],
  "openalex": "W7223107651",
  "pdf_url": "https://arxiv.org/pdf/2610.27540",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/4s34yv2dczrjy.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.27540",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.27540"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Low-nonlinearity advantage of hollow-core fiber for wavelength multiplexing of quantum entanglement and classical DWDM signals",
  "title_text": "Low-nonlinearity advantage of hollow-core fiber for wavelength multiplexing of quantum entanglement and classical DWDM signals",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/4s34yv2dczrjy",
  "venue": "arXiv",
  "versions": []
}