{
  "annotation_id": "d32ca605-38f5-4c88-9364-8fa5f5e095a9",
  "date_created": "2026-03-02T18:01:55.460000Z",
  "date_modified": "2026-03-02T18:01:55.460000Z",
  "file_hash": "0c72bff09af1199e87675e17d753c21abc5b3913cb773240188ffe8b5c69dd5f",
  "private": false,
  "record": {
    "abstract": "We derive tight quadratic inequalities for all kinds of hybrid\nseparable-inseparable $n$-particle density operators on an arbitrary\ndimensional space. This methodology enables us to truly derive a tight\nquadratic inequality as tests for full $n$-partite entanglement in various\nBell-type correlation experiments on the systems that may not be identified as\na collection of qubits, e.g., those involving photons measured by incomplete\ndetectors. It is also proved that when the two measured observables are assumed\nto precisely anti-commute, a stronger quadratic inequality can be used as a\nwitness of full $n$-partite entanglement.",
    "arxiv_id": "quant-ph/0211122",
    "authors": [
      "Koji Nagata",
      "Masato Koashi",
      "Nobuyuki Imoto"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.89.260401",
    "journal_ref": "Phys. Rev. Lett. 89, 260401 (2002)",
    "title": "Configuration of separability and tests for multipartite entanglement in   Bell-type experiments",
    "url": "https://arxiv.org/abs/quant-ph/0211122"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c1903fda-c8ef-4ed9-8b90-32e9e72a004d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}