{
  "annotation_id": "d46149ba-2e47-4bd5-b2d7-3a12af9b088d",
  "date_created": "2026-03-02T18:02:10.463000Z",
  "date_modified": "2026-03-02T18:02:10.463000Z",
  "file_hash": "bc66c742efe081f175a637bf3a180011c66550cc0367d9ffbab97d28c7cd742c",
  "private": false,
  "record": {
    "abstract": "We examine the physical significance of fidelity as a measure of similarity\nfor Gaussian states, by drawing a comparison with its classical counterpart. We\nfind that the relationship between these classical and quantum fidelities is\nnot straightforward, and in general does not seem to provide insight into the\nphysical significance of quantum fidelity. To avoid this ambiguity we propose\nthat the efficacy of quantum information protocols be characterized by\ndetermining their transfer function and then calculating the fidelity\nachievable for a hypothetical pure reference input state.",
    "arxiv_id": "quant-ph/0409101",
    "authors": [
      "H. Jeong",
      "T. C. Ralph",
      "W. P. Bowen"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1364/JOSAB.24.000355",
    "journal_ref": "J. Opt. Soc. Am. B 24, 355-362 (2007)",
    "title": "Quantum and classical fidelities for Gaussian states",
    "url": "https://arxiv.org/abs/quant-ph/0409101"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f21e7b66-3aa9-4b1c-b8da-00e1a9c4d1d6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}