{
  "abstract": "Stimulated Brillouin scattering (SBS) is a powerful mechanism for distributed sensing in optical fibers, as the Brillouin response is highly sensitive to local material parameters. Assuming the input probe is a quantum state, we develop a quantum-information-theoretic framework for SBS-based fiber sensing and intrusion detection. Starting from a linearized opto-acoustic Hamiltonian, we derive an effective input-output relation for a short fiber segment. We then model each fiber segment as a single-mode bosonic Gaussian channel and the entire fiber as a cascade of quantum channels. We then compute the quantum Fisher information for general SBS-dependent parameters and identify optimal measurement settings to achieve the quantum limit, comparing them with receiver-constrained strategies such as heterodyne detection and photon counting. In addition, we propose an adaptive approach that achieves first-order asymptotic optimality and provides a novel second-order correction to address preliminary miscalibration. As an application, we apply the framework to the fiber-tapping detection problem.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.12980",
  "author_total": 2,
  "authors": [
    {
      "name": "Kiran Adhikari"
    },
    {
      "name": "Janis Nötzel"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/eh84v5zqsssrp.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.12980",
  "fulltext_url": null,
  "id": "eh84v5zqsssrp",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.12980",
  "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": "W7221544840",
  "pdf_url": "https://arxiv.org/pdf/2610.12980",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/eh84v5zqsssrp.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:28:36Z",
      "native_id": "2610.12980",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.12980"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Quantum Information-Theoretic Analysis of Optical Fiber Sensing via Stimulated Brillouin Scattering",
  "title_text": "Quantum Information-Theoretic Analysis of Optical Fiber Sensing via Stimulated Brillouin Scattering",
  "type": "preprint",
  "updated_at": "2026-10-30T12:28:36Z",
  "url": "https://research.draconitic.com/paper/eh84v5zqsssrp",
  "venue": "arXiv",
  "versions": []
}