{
  "abstract": "Quantum light sources constitute a crucial physical resource for the construction of quantum networks. Despite remarkable recent progress, there remains a lack of systematic investigation into the bandwidth tunability of quantum light sources under fixed waveguide parameters. In this work, we demonstrate a broadband quantum light source in the 1.5 $μ$m band with tunable bandwidth by changing the temperature of a piece of periodically poled lithium niobate waveguide. In our demonstration, the bandwidth of the quantum light source is tuned from 78.3 nm to 96.2 nm with a temperature change of 1 $^\\circ$C . Under different bandwidths, the generation rates of correlated photon pairs are greater than 6.3 MHz with coincidence-to-accidental ratios consistently being no less than 608. The energy-time entanglement properties are measured by using the Franson interference with two-photon interference visibilities larger than 99.06%. Our results provide an effective method for developing the quantum light sources with tunable bandwidth which has great potential for building the large-scale quantum networks.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.20251",
  "author_total": 13,
  "authors": [
    {
      "name": "Wei Wu"
    },
    {
      "name": "Yun-Ru Fan"
    },
    {
      "name": "Ri-Yao Song"
    },
    {
      "name": "Si Shen"
    },
    {
      "name": "Zi-Chang Zhang"
    },
    {
      "name": "Hai-Zhi Song"
    },
    {
      "name": "Hao Li"
    },
    {
      "name": "Li-Xing You"
    },
    {
      "name": "Ping-He Wang"
    },
    {
      "name": "Yan-Yu Wei"
    },
    {
      "name": "Kai Guo"
    },
    {
      "name": "Guang-Can Guo"
    },
    {
      "name": "Qiang Zhou"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dmafv65j61w13.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.20251",
  "fulltext_url": null,
  "id": "dmafv65j61w13",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.20251",
  "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": "W7213587201",
  "pdf_url": "https://arxiv.org/pdf/2609.20251",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/dmafv65j61w13.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:19Z",
      "native_id": "2609.20251",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.20251"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Bandwidth-Tunable Quantum Light Source at 1.5 $μ$m",
  "title_text": "Bandwidth-Tunable Quantum Light Source at 1.5 μm",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:19Z",
  "url": "https://research.draconitic.com/paper/dmafv65j61w13",
  "venue": "arXiv",
  "versions": []
}