{
  "annotation_id": "fe7b7c2f-a713-4c61-8248-95b8678c67fa",
  "date_created": "2026-03-02T18:01:52.359000Z",
  "date_modified": "2026-03-02T18:01:52.359000Z",
  "file_hash": "4764030cdbd22040f0d89ff76c6f341facce66720675f970a0b11b97ede40808",
  "private": false,
  "record": {
    "abstract": "We obtain a simplified and obvious expression of \"concurrence\" in Wootters\u0027\nmeasure of entanglement of a pair of qubits having no more than two non-zero\neigenvalues in terms of concurrences of eigenstates and their simple\ncombinations. It not only simplifies the calculation of Wootters\u0027 measure of\nentanglement, but also reveals some its general and important features. Our\nconclusions are helpful to understand and use quantum entanglement further.",
    "arxiv_id": "quant-ph/0208036",
    "authors": [
      "An Min Wang"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0256-307X/20/11/001",
    "journal_ref": "Chinese Phys. Lett. Vol.20, 1907(2003) [a little revision]",
    "title": "Simplified and obvious expression of concurrence in Wootters\u0027 measure of   entanglement of a pair of qubits",
    "url": "https://arxiv.org/abs/quant-ph/0208036"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "10274a38-d440-413a-86ba-7c50659dbd5f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}