{
  "annotation_id": "fe23220d-8746-405d-b499-a8476c1c6143",
  "date_created": "2026-03-02T18:01:38.422000Z",
  "date_modified": "2026-03-02T18:01:38.422000Z",
  "file_hash": "73d4c3a66fd83886983829975439686c678401948b2249f60d0c827773814463",
  "private": false,
  "record": {
    "abstract": "The unitary evolution can be represented by a finite product of exponential\noperators. It leads to a perturbative expression of the density operator of a\nclose system. Based on the perturbative expression scheme, we present a\nentanglement measure, this measure has the advantage that it is easy to compute\nfor a general dynamical process.",
    "arxiv_id": "quant-ph/0003024",
    "authors": [
      "X. X. Yi",
      "C. P. Sun"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/S0375-9601(99)00609-X",
    "journal_ref": "Phys. Lett. A, 262(1999)287",
    "title": "Factoring the unitary evolution operator and quantifying entanglement",
    "url": "https://arxiv.org/abs/quant-ph/0003024"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8fd86bf7-4146-49e5-a223-eb4d8fa3646b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}