{
  "annotation_id": "ebf3bc53-13e6-447a-8e01-e8486cf47447",
  "date_created": "2026-03-02T18:02:15.968000Z",
  "date_modified": "2026-03-02T18:02:15.968000Z",
  "file_hash": "964d006c44046fa39f21fc58ca6cff90cf472a0c265b00cfbbb709be2d5efb36",
  "private": false,
  "record": {
    "abstract": "We propose a correlation of local observables on many sites in macroscopic\nquantum systems. By measuring the correlation one can detect, if any,\nsuperposition of macroscopically distinct states, which we call macroscopic\nentanglement, in arbitrary quantum states that are (effectively) homogeneous.\nUsing this property, we also propose an index of macroscopic entanglement.",
    "arxiv_id": "quant-ph/0504086",
    "authors": [
      "Akira Shimizu",
      "Tomoyuki Morimae"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.supr-con",
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevLett.95.090401",
    "journal_ref": "Phys. Rev. Lett. 95, 090401 (2005)",
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Detection of Macroscopic Entanglement by Correlation of Local   Observables",
    "url": "https://arxiv.org/abs/quant-ph/0504086"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0c73e0ce-172e-439d-a1e8-7ed1601f24c6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}