{
  "annotation_id": "f9b42b25-d24c-4270-a406-81c70396da53",
  "date_created": "2026-03-02T18:02:37.732000Z",
  "date_modified": "2026-03-02T18:02:37.732000Z",
  "file_hash": "326e665ebec54831f97b05f1a15a7fcfbca839d9474c7ba81936793bf6f43e27",
  "private": false,
  "record": {
    "abstract": "We derive a general limit on the fidelity of a quantum channel conveying an\nensemble of pure states. Unlike previous results, this limit applies to\narbitrary coding and decoding schemes, including nonunitary decoding. This\nestablishes the converse of the quantum noiseless coding theorem for all such\nschemes.",
    "arxiv_id": "quant-ph/9603014",
    "authors": [
      "Howard Barnum",
      "Christopher A. Fuchs",
      "Richard Jozsa",
      "Benjamin Schumacher"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.54.4707",
    "title": "A General Fidelity Limit for Quantum Channels",
    "url": "https://arxiv.org/abs/quant-ph/9603014"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a7c5f0cc-02ca-4bb5-bff3-0e98b5aa5e80",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}