{
  "abstract": "In a quantum augmented network, sharing optical fiber with classical traffic requires quantum wavelength selection to balance logical fidelity, block acceptance, and classical data reception. Here we develop a wavelength-selection framework for an error-corrected three-stage quantum communication protocol. Under a thermal-background model with independent errors, an ideal one-photon receiver, and ideal recovery, we derive an accepted qubit channel and a key-independent lower bound on logical entanglement fidelity. Combining this bound with block acceptance gives an entanglement-fidelity yield bound, which we maximize over evaluated wavelengths subject to fidelity and classical link-budget requirements. For the Steane [[7,1,3]] code at 5 km per traversal and -10 dBm per classical channel, the largest fidelity certificate occurs near 1537 nm, whereas the largest yield bound occurs near 1551 nm. Along the 1.25 Gb/s classical link budget with 0.2% base error, the optimized yield bound falls below 10^-6 near 10 km per traversal, while fidelity remains certified at 0.99 or higher at longer spans. These results distinguish fidelity and yield constraints and identify certified operating regions for quantum-augmented networks sharing optical fiber.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.20987",
  "author_total": 3,
  "authors": [
    {
      "name": "Nitin Jha"
    },
    {
      "name": "Prateek Paudel"
    },
    {
      "name": "Abhishek Parakh"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d6c098z37pmdv.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.20987",
  "fulltext_url": null,
  "id": "d6c098z37pmdv",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.20987",
  "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",
      "cs.CR"
    ],
    [
      "arxiv",
      "cs.NI"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "1702|Quantum Information and Cryptography"
    ]
  ],
  "openalex": "W7222540811",
  "pdf_url": "https://arxiv.org/pdf/2610.20987",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/d6c098z37pmdv.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:50Z",
      "native_id": "2610.20987",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.20987"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Practical wavelength selection for quantum-augmented networks over shared optical fiber",
  "title_text": "Practical wavelength selection for quantum-augmented networks over shared optical fiber",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:50Z",
  "url": "https://research.draconitic.com/paper/d6c098z37pmdv",
  "venue": "arXiv",
  "versions": []
}