{
  "annotation_id": "e249a001-699b-4ece-9e2d-2da60008412f",
  "date_created": "2026-03-02T18:02:10.346000Z",
  "date_modified": "2026-03-02T18:02:10.346000Z",
  "file_hash": "90b0d5a22605f530c10019bfb0a7968fa9be0d4cbd81d9691478110c54910860",
  "private": false,
  "record": {
    "abstract": "It is known that the quantum fidelity, as a measure of the closeness of two\nquantum states, is operationally equivalent to the minimal overlap of the\nprobability distributions of the two states over all possible POVMs; the POVM\nrealizing the minimum is optimal. We consider the ability of homodyne detection\nto distinguish two single-mode Gaussian states, and investigate to what extent\nit is optimal in this information-theoretic sense. We completely identify the\nconditions under which homodyne detection makes an optimal distinction between\ntwo single-mode Gaussian states of the same mean, and show that if the Gaussian\nstates are pure, they are always optimally distinguished.",
    "arxiv_id": "quant-ph/0410111",
    "authors": [
      "Hyunchul Nha",
      "H. J. Carmichael"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.71.032336",
    "journal_ref": "Phys. Rev. A 71, 032336 (2005)",
    "title": "Distinguishing two single-mode Gaussian states by homodyne detection: An   information-theoretic approach",
    "url": "https://arxiv.org/abs/quant-ph/0410111"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fd3fedf9-08fa-40f2-9d53-53f544276f8f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}