{
  "abstract": "Quantum networks require scalable photon sources combining narrow linewidth, high efficiency, and high indistinguishability. Microresonator photon-pair sources are promising candidates, yet a source-only description based on the joint spectral amplitude (JSA) predicts near-zero Hong-Ou-Mandel (HOM) interference visibility between photons generated by independent, CW-driven microresonators. In this work, we show that the observed HOM interference is not determined by the JSA alone. By combining finite-time detection with cavity-enhanced spontaneous four-wave mixing, we characterize a detector-conditioned heralded state governed by the idler-photon detection window. We further demonstrate that independently optimizing the idler and signal detection windows allows both heralded-photon indistinguishability and intrinsic heralding efficiency to approach unity, without spectral filtering or complex source engineering. Utilizing integrated high-$Q$ silicon nitride microresonators, we achieve HOM visibilities of 0.992(8) and 0.942(12), without background subtraction, at fourfold count rates of 4.5(3) and 12.2(6) Hz, respectively. Our work establishes CW-driven high-$Q$ microresonators as a robust and scalable platform for quantum-network primitives.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.18575",
  "author_total": 9,
  "authors": [
    {
      "name": "Ruiyang Chen"
    },
    {
      "name": "Sicheng Zeng"
    },
    {
      "name": "Yuan Chen"
    },
    {
      "name": "Sanli Huang"
    },
    {
      "name": "Zeying Zhong"
    },
    {
      "name": "Zhen Chen"
    },
    {
      "name": "Xue Bai"
    },
    {
      "name": "Yi-Han Luo"
    },
    {
      "name": "Junqiu Liu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/615xnej2538k9.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.18575",
  "fulltext_url": null,
  "id": "615xnej2538k9",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.18575",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "1702|Quantum Information and Cryptography"
    ]
  ],
  "openalex": "W7213530173",
  "pdf_url": "https://arxiv.org/pdf/2609.18575",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/615xnej2538k9.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:01Z",
      "native_id": "2609.18575",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.18575"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Filter-Free Indistinguishable Photon Generation from Continuous-Wave-Driven Integrated Microresonators",
  "title_text": "Filter-Free Indistinguishable Photon Generation from Continuous-Wave-Driven Integrated Microresonators",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:01Z",
  "url": "https://research.draconitic.com/paper/615xnej2538k9",
  "venue": "arXiv",
  "versions": []
}