{
  "annotation_id": "7de5853c-e04b-44a9-98f0-c026a0ab17e2",
  "date_created": "2026-03-02T18:02:41.543000Z",
  "date_modified": "2026-03-02T18:02:41.543000Z",
  "file_hash": "e34ed5d5cca10c7ca20cc60ae69382902685e1c170c4574eb23d34c0deb286c1",
  "private": false,
  "record": {
    "abstract": "A method to combine two quantum error-correcting codes is presented. Even\nwhen starting with additive codes, the resulting code might be non-additive.\nFurthermore, the notion of the erasure space is introduced which gives a full\ncharacterisation of the erasure-correcting capabilities of the codes. For the\nspecial case that the two codes are unitary images of each other, the erasure\nspace and the pure erasure space of the resulting code can be calculated.",
    "arxiv_id": "quant-ph/9703016",
    "authors": [
      "Markus Grassl",
      "Thomas Beth"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "A Note on Non-Additive Quantum Codes",
    "url": "https://arxiv.org/abs/quant-ph/9703016"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9f5414be-2b64-4a01-8f6f-eaab682cee1a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}