{
  "abstract": "We investigate optimal metrological protocols for phase estimation in the presence of correlated dephasing noise, including spin-squeezed state sensing strategies as well as parallel and adaptive protocols optimized using tensor-network-based numerical methods. The results are benchmarked against fundamental bounds obtained either via the latest quantum comb extension method or an optimized classical simulation method. We find that the spin-squeezed states offer practically optimal performance in the regime where phase fluctuations are positively correlated but can be outperformed by tensor-network-optimized strategies for negatively correlated fluctuations.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Paper",
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "name": "Srijon Ghosh"
    },
    {
      "name": "Arkadiusz Kobus"
    },
    {
      "name": "Stanisław Kurdziałek"
    },
    {
      "name": "Rafał Demkowicz-Dobrzański"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6y4spjtxgf4dd.bib",
  "cited_by": 0,
  "doi": "10.22331/q-2026-10-28-2251",
  "fulltext_url": null,
  "id": "6y4spjtxgf4dd",
  "issns": [
    "2521-327X"
  ],
  "landing_url": "https://quantum-journal.org/papers/q-2026-10-28-2251/",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "feed-journal",
      "physics/quantum"
    ],
    [
      "openalex",
      "1702|Quantum Information and Cryptography"
    ]
  ],
  "openalex": "W4416158920",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-28",
  "publisher": "Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften",
  "ris": "https://research.draconitic.com/paper/6y4spjtxgf4dd.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:17Z",
      "native_id": "10.22331/q-2026-10-28-2251",
      "source": "feed-quantum",
      "url": "https://quantum-journal.org/papers/q-2026-10-28-2251/"
    },
    {
      "first_seen": "2026-10-30T12:17:58Z",
      "native_id": "10.22331/q-2026-10-28-2251",
      "source": "crossref",
      "url": "https://quantum-journal.org/papers/q-2026-10-28-2251/"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "feed-journal:physics/quantum",
      "subfield": "quantum"
    }
  ],
  "title": "Optimal phase estimation in the presence of correlated dephasing",
  "title_text": "Optimal phase estimation in the presence of correlated dephasing",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:58Z",
  "url": "https://research.draconitic.com/paper/6y4spjtxgf4dd",
  "venue": "Quantum",
  "versions": []
}