{
  "annotation_id": "044dfa43-4b07-48a8-81a8-2d4ef104df6b",
  "date_created": "2026-03-02T18:01:46.204000Z",
  "date_modified": "2026-03-02T18:01:46.204000Z",
  "file_hash": "d9bd36b0d0ce282eb2f4c697aaf31341571e5c72eb4759f51af4a39c1de1e839",
  "private": false,
  "record": {
    "abstract": "The concurrence, a quantitative measure of the entanglement between a pair of\nparticles, is determined for the case where the pair is extracted from a\nsymmetric state of N two-level systems. Examples are given for both pure and\nmixed states of the N-particle system, and for a pair extracted from two\nensembles with correlated collective spins.",
    "arxiv_id": "quant-ph/0106145",
    "authors": [
      "Xiaoguang Wang",
      "Klaus Molmer"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1140/epjd/e20020045",
    "journal_ref": "Eur. Phys. J. D 18, 385-391 (2002).",
    "title": "Pairwise entanglement in symmetric multi-qubit systems",
    "url": "https://arxiv.org/abs/quant-ph/0106145"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d38fd99d-ce7f-463f-a464-e692ecb62534",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}