{
  "annotation_id": "ac1d99cc-fff4-4e98-8aa5-4a2e63750a32",
  "date_created": "2026-03-02T18:02:02.802000Z",
  "date_modified": "2026-03-02T18:02:02.802000Z",
  "file_hash": "bb2ec0120012dddc773c75bd61f43766a1b1d7e7d0f3bca56a6172749339ec5b",
  "private": false,
  "record": {
    "abstract": "We classify the entanglement of two--mode Gaussian states according to their\ndegree of total and partial mixedness. We derive exact bounds that determine\nmaximally and minimally entangled states for fixed global and marginal\npurities. This characterization allows for an experimentally reliable estimate\nof continuous variable entanglement based on measurements of purity.",
    "arxiv_id": "quant-ph/0310150",
    "authors": [
      "Gerardo Adesso",
      "Alessio Serafini",
      "Fabrizio Illuminati"
    ],
    "categories": [
      "quant-ph",
      "cond-mat",
      "hep-th",
      "math-ph",
      "math.MP"
    ],
    "doi": "10.1103/PhysRevLett.92.087901",
    "journal_ref": "Phys.Rev.Lett. 92 (2004) 087901",
    "title": "Determination of continuous variable entanglement by purity measurements",
    "url": "https://arxiv.org/abs/quant-ph/0310150"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "87583ecb-8b0b-4add-b838-532562f17008",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}