{
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  "date_created": "2026-03-02T18:02:34.712000Z",
  "date_modified": "2026-03-02T18:02:34.712000Z",
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  "record": {
    "abstract": "The dynamical properties of quantum entanglement in two three-level trapped\nions interacting with a laser field are studied in terms of the negative\neigenvalues of the partial transposition of the density operator. In contrast\nto the usual belief that destroying the entanglement can be observed due to the\nenvironment, it is found that the Stark shift can also produce sudden death of\nentanglement and long-lived entanglement between the qubits that are prepared\ninitially in separable states or mixed states.",
    "arxiv_id": "quant-ph/0703077",
    "authors": [
      "Mahmoud Abdel-Aty",
      "H. Moya-Cessa"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/j.physleta.2007.05.003",
    "journal_ref": "Physics Letters A, Volume 369, Issues 5-6, 1 October 2007, Pages\n  372-376",
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Sudden death and long-lived entanglement of two three-level trapped ions",
    "url": "https://arxiv.org/abs/quant-ph/0703077"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "84a6d12a-c089-4e6d-b33b-c2ae5dd8c817",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}