{
  "abstract": "We investigate pulsed single-photon magnetometry with a Zeeman-sensitive $Λ$-type three-level system driven by a classical control field. We derive the asymptotic output state and decompose its quantum Fisher information into photon-loss, spectral-intensity, and spectral-phase contributions. Environmental coupling reshapes the scattering response and can increase magnetic-field information. At critical coupling, real-frequency zeros of the scattering amplitude redistribute information toward measurable spectral intensity, allowing frequency-resolved photon counting to capture nearly all of the magnetic-field information encoded in the output state when the zeros lie within the pulse bandwidth. For long Gaussian pulses with a smooth, nonzero central-frequency scattering amplitude, the additional spectral-intensity contribution and residual spectral-phase information gap decrease as $T^{-2}$ or faster.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.27979",
  "author_total": 3,
  "authors": [
    {
      "name": "Seyed Mostafa Moniri"
    },
    {
      "name": "Elnaz Darsheshdar"
    },
    {
      "name": "Mikayel Khanbekyan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9j94n966ty7t8.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.27979",
  "fulltext_url": null,
  "id": "9j94n966ty7t8",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.27979",
  "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",
      "3107|Quantum optics and atomic interactions"
    ]
  ],
  "openalex": "W7204802552",
  "pdf_url": "https://arxiv.org/pdf/2608.27979",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9j94n966ty7t8.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:22Z",
      "native_id": "2608.27979",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.27979"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Pulsed single-photon magnetometry with a $Λ$-type three-level system: near-optimal frequency-resolved photon counting",
  "title_text": "Pulsed single-photon magnetometry with a Λ-type three-level system: near-optimal frequency-resolved photon counting",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:22Z",
  "url": "https://research.draconitic.com/paper/9j94n966ty7t8",
  "venue": "arXiv",
  "versions": []
}