{
  "annotation_id": "a6689685-6b64-46f1-9824-0b0585f7f6ae",
  "date_created": "2026-03-02T18:02:13.755000Z",
  "date_modified": "2026-03-02T18:02:13.755000Z",
  "file_hash": "ea4f162c5fd420374ea5521370e3f33852b5112cec45925935d42583183be9ca",
  "private": false,
  "record": {
    "abstract": "We derive an explicit formula for an entanglement measure of mixed quantum\nstates in a multi-level atom interacting with a cavity field within the\nframework of the quantum mutual entropy. We describe its theoretical basis and\ndiscuss its practical relevance (especially in comparison with already known\npure state results). The effect of the number of levels involved on the\nentanglement is demonstrated via examples of three-, four- and five-level atom.\nNumerical calculations under current experimental conditions are performed and\nit is found that the number of levels present changes the general features of\nentanglement dramatically.",
    "arxiv_id": "quant-ph/0503106",
    "authors": [
      "Mahmoud Abdel-Aty",
      "M. R. B. Wahiddin",
      "A. -S. F. Obada"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Entanglement manipulation for mixed states in a multilevel atom   interacting with a cavity field",
    "url": "https://arxiv.org/abs/quant-ph/0503106"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3f5bb024-9028-4f1f-ade7-c923300d36c6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}