{
  "annotation_id": "bd28e86e-424b-475c-8e97-31b315a01587",
  "date_created": "2026-03-02T18:02:47.593000Z",
  "date_modified": "2026-03-02T18:02:47.593000Z",
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  "private": false,
  "record": {
    "abstract": "The Fisher information of a quantum observable is shown to be proportional to\nboth (i) the difference of a quantum and a classical variance, thus providing a\nmeasure of nonclassicality; and (ii) the rate of entropy increase under\nGaussian diffusion, thus providing a measure of robustness. The joint\nnonclassicality of position and momentum observables is shown to be\ncomplementary to their joint robustness in an exact sense.",
    "arxiv_id": "quant-ph/9912055",
    "authors": [
      "Michael J. W. Hall"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.62.012107",
    "journal_ref": "Physical Review A 62 (2000) 012107 (6pp.)",
    "title": "Quantum properties of classical Fisher information",
    "url": "https://arxiv.org/abs/quant-ph/9912055"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "af060fb5-432d-44e9-a110-79cc2ef347ac",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}