{
  "annotation_id": "d6696937-01ed-4ef2-b290-3fa843036f96",
  "date_created": "2026-03-02T18:02:40.447000Z",
  "date_modified": "2026-03-02T18:02:40.447000Z",
  "file_hash": "2a3d8cb31cd8e2e9a31956627029caa1c61f676cecb7ff67aabd9af1dc2c8c97",
  "private": false,
  "record": {
    "abstract": "Up to now every good quantum error-correcting code discovered has had the\nstructure of an eigenspace of an Abelian group generated by tensor products of\nPauli matrices; such codes are known as stabilizer or additive codes. In this\nletter we present the first example of a code that is better than any code of\nthis type. It encodes six states in five qubits and can correct the erasure of\nany single qubit.",
    "arxiv_id": "quant-ph/9703002",
    "authors": [
      "Eric M. Rains",
      "R. H. Hardin",
      "Peter W. Shor",
      "N. J. A. Sloane"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.79.953",
    "journal_ref": "Phys.Rev.Lett.79:953-954,1997",
    "title": "A nonadditive quantum code",
    "url": "https://arxiv.org/abs/quant-ph/9703002"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7f7854ae-e2cc-4d73-9f17-658d556e8fae",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}