{
  "abstract": "The Generalized Superfast Encoding (GSE) is a fermion-to-qubit mapping that has error-correcting/detecting properties. To this point, all demonstrations have been relegated to error-detection only, as no fault-tolerance under circuit-level noise has been observed. Here, we introduce an even-distance $d$ constant stabilizer-weight GSE where each of $N$ modes is assigned a $d$-qubit block arranged on a ring. The resulting stabilizer generators have constant weight 4 or 6 for any even distance $d$. Furthermore, the full stabilizer set of this construction can always be partitioned into four qubit-wise commuting groups, which enables compact syndrome-extraction scheduling. We simulate quantum memory experiments under circuit-level depolarizing noise for two instances of this code, $[[48,8,6]]$ and $[[64,8,8]]$ and the threshold is observed to be $\\approx 4\\times10^{-3}$. This is, to our knowledge, the first fault-tolerant quantum-memory characterization of a fermion-mapping with threshold-like scaling.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.08957",
  "author_total": 2,
  "authors": [
    {
      "name": "James Brown"
    },
    {
      "name": "Kenny Heitritter"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2nzry1akgq919.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.08957",
  "fulltext_url": null,
  "id": "2nzry1akgq919",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.08957",
  "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 Computing Algorithms and Architecture"
    ]
  ],
  "openalex": "W7212053028",
  "pdf_url": "https://arxiv.org/pdf/2609.08957",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2nzry1akgq919.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:52Z",
      "native_id": "2609.08957",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.08957"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "First fault-tolerant quantum memory demonstration for a generalized superfast encoding",
  "title_text": "First fault-tolerant quantum memory demonstration for a generalized superfast encoding",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:52Z",
  "url": "https://research.draconitic.com/paper/2nzry1akgq919",
  "venue": "arXiv",
  "versions": []
}