{
  "abstract": "We introduce a parallel decoder for quantum low-density parity-check (QLDPC) codes based on probabilistic bits (p-bits), tunable stochastic binary units controlled by local fields. The idea is that predicted error configurations, interpreted as explanations of the observed syndrome, are updated stochastically using local Gibbs conditionals, while a progressively strengthened parity penalty drives the search toward syndrome-valid configurations. A coloring of the decoding graph enables parallel block updates, and independent replicas and restarts provide trajectory diversity. The best candidate encountered during the search is returned, mirroring the candidate-selection strategy of recent ensemble decoders. At the stated update budgets, the resulting logical error rates are on par with leading decoders under both code-capacity and circuit-level noise. While the total number of variable resamplings can be substantially larger than the message-update count of BP-based alternatives, the numerical results establish constraint-annealed p-bit dynamics as a competitive stochastic alternative for QLDPC decoding and motivate further study of hardware-native implementations.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.17520",
  "author_total": 3,
  "authors": [
    {
      "name": "Mert Gökduman"
    },
    {
      "name": "Cyril Guyot"
    },
    {
      "name": "Henry D. Pfister"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3r122qxb9q6qr.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.17520",
  "fulltext_url": null,
  "id": "3r122qxb9q6qr",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.17520",
  "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",
      "quant-ph"
    ],
    [
      "openalex",
      "1702|Quantum Computing Algorithms and Architecture"
    ]
  ],
  "openalex": "W7221829460",
  "pdf_url": "https://arxiv.org/pdf/2610.17520",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3r122qxb9q6qr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:11Z",
      "native_id": "2610.17520",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.17520"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Chromatic Block-Gibbs p-Bit Decoding of QLDPC Codes",
  "title_text": "Chromatic Block-Gibbs p-Bit Decoding of QLDPC Codes",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:11Z",
  "url": "https://research.draconitic.com/paper/3r122qxb9q6qr",
  "venue": "arXiv",
  "versions": []
}