{
  "abstract": "Dipole-phonon quantum logic (DPQL) offers novel approaches for state preparation, measurement, and control of quantum information in molecular ion qubits. Here we report the first experimental demonstration of DPQL as a spectroscopic tool using the shared motional mode of a CaO$^+$-Ca$^+$ ion chain to measure the frequency splitting of the ground $Ω$-doublet of CaO$^+$. By comparing the dipole-phonon signal across three trap-frequency ramp ranges, we determine the splitting to be $ω_{mol}=2π\\times454\\pm1$ kHz and place a lower bound on the effective dipole-phonon coupling. The rate of observation is limited by the low thermal population in the molecular ground rotational state.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.07680",
  "author_total": 5,
  "authors": [
    {
      "name": "Lu Qi"
    },
    {
      "name": "Evan C. Reed"
    },
    {
      "name": "Duanyang Wang"
    },
    {
      "name": "Boyan Yu"
    },
    {
      "name": "Kenneth R. Brown"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/a5ttabx18jkxe.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.07680",
  "fulltext_url": null,
  "id": "a5ttabx18jkxe",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.07680",
  "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": "W7220908974",
  "pdf_url": "https://arxiv.org/pdf/2610.07680",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/a5ttabx18jkxe.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:22Z",
      "native_id": "2610.07680",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.07680"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Spectroscopy using dipole-phonon quantum logic",
  "title_text": "Spectroscopy using dipole-phonon quantum logic",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:22Z",
  "url": "https://research.draconitic.com/paper/a5ttabx18jkxe",
  "venue": "arXiv",
  "versions": []
}