{
  "annotation_id": "c128b3d9-eb1c-4b52-bb93-48b971d4ac2d",
  "date_created": "2026-03-02T18:02:29.887000Z",
  "date_modified": "2026-03-02T18:02:29.887000Z",
  "file_hash": "c61672a1713e543ee93a336ce2ba2493c43efcbc9f73b9e72a014f79385c2742",
  "private": false,
  "record": {
    "abstract": "We obtain a four-photon polarization-entangled state with a visibility as\nhigh as (95.35\\pm 0.45)% directly from a single down-conversion source. A\nsuccess probability of (81.54\\pm 1.38)% is observed by applying this entangled\nstate to realize a four-party quantum communication complexity scenario (QCCS),\nwhich comfortably surpass the classical limit of 50%. As a comparison, two\nEinstein-Podolsky-Rosen (EPR) pairs are shown to implement the scenario with a\nsuccess probability of (73.89\\pm 1.33)%. This four-photon state can be used to\nfulfill decoherence-free quantum information processing and other advanced\nquantum communication schemes.",
    "arxiv_id": "quant-ph/0607183",
    "authors": [
      "Jin-Shi Xu",
      "Chuan-Feng Li",
      "Guang-Can Guo"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.74.052311",
    "journal_ref": "Phys. Rev. A 74, 052311 (2006)",
    "title": "Generation of a High-Visibility Four-Photon Entangled State and   Realization of a Four-Party Quantum Communication Complexity Scenario",
    "url": "https://arxiv.org/abs/quant-ph/0607183"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f7222aed-4614-42c1-9da1-9e87aa797b49",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}