{
  "abstract": "Atom-interferometric quantum inertial sensors are promising candidates for inertial navigation systems owing to their high sensitivity and intrinsically low drift. However, their application to next-generation inertial navigation, targeting a drift below 100 m/month, requires exceptionally stringent inertial-sensor bias stability. In conventional Raman atom interferometers based on ground-state hyperfine transitions, suppressing inertial-sensor biases arising from quadratic Zeeman shifts requires highly optimized magnetic shielding. In this work, we propose a Raman atom interferometer based on fine-structure transitions between metastable states of barium, which exhibit a quadratic Zeeman sensitivity approximately three orders of magnitude lower than that of conventional alkali-atom Raman transitions. We show that the proposed scheme increases the allowable spatial gradient of the magnetic-field magnitude by a factor of several tens, thereby relaxing the magnetic-field-control requirements from highly optimized shielding and compensation systems to standard magnetic-field-control techniques. Furthermore, we experimentally demonstrate Mach--Zehnder interference between metastable fine-structure states of barium, validating a key building block of the proposed inertial-sensing scheme.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.20168",
  "author_total": 6,
  "authors": [
    {
      "name": "Masaki Nagamori"
    },
    {
      "name": "Hiromi Hatano"
    },
    {
      "name": "Toshiyuki Hosoya"
    },
    {
      "name": "Yuki Miyazawa"
    },
    {
      "name": "Tomoya Sato"
    },
    {
      "name": "Mikio Kozuma"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0d2we9w66wce9.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.20168",
  "fulltext_url": null,
  "id": "0d2we9w66wce9",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.20168",
  "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",
      "physics.atom-ph"
    ],
    [
      "openalex",
      "3107|Cold Atom Physics and Bose-Einstein Condensates"
    ]
  ],
  "openalex": "W7222149520",
  "pdf_url": "https://arxiv.org/pdf/2610.20168",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0d2we9w66wce9.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:31Z",
      "native_id": "2610.20168",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.20168"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.atom-ph",
      "subfield": "amo"
    }
  ],
  "title": "Fine-structure Raman interferometry with metastable barium for magnetically resilient inertial sensing",
  "title_text": "Fine-structure Raman interferometry with metastable barium for magnetically resilient inertial sensing",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:31Z",
  "url": "https://research.draconitic.com/paper/0d2we9w66wce9",
  "venue": "arXiv",
  "versions": []
}