{
  "annotation_id": "b310a541-9683-4bb3-b0d3-ae279b613abe",
  "date_created": "2026-03-02T18:02:09.951000Z",
  "date_modified": "2026-03-02T18:02:09.951000Z",
  "file_hash": "d577d4acc9b4af9453de3ae78fd6f6a9462394b368fa31a2c02cd9c6c9c3fef2",
  "private": false,
  "record": {
    "abstract": "The unconditional entanglement swapping for continuous variables is\nexperimentally demonstrated. Two initial entangled states are produced from two\nnondegenerate optical parametric amplifiers operating at deamplification.\nThrough implementing the direct measurement of Bell-state between two optical\nbeams from each amplifier the remaining two optical beams, which have never\ndirectly interacted with each other, are entangled. The quantum correlation\ndegrees of 1.23dB and 1.12dB below the shot noise limit for the amplitude and\nphase quadratures resulting from the entanglement swapping are straightly\nmeasured.",
    "arxiv_id": "quant-ph/0407024",
    "authors": [
      "Xiaojun Jia",
      "Xiaolong Su",
      "Qing Pan",
      "Jiangrui Gao",
      "Changde Xie",
      "Kunchi Peng"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.93.250503",
    "journal_ref": "Phys. Rev. Lett. 93, 250503 (2004)",
    "title": "Experimental Demonstration of Unconditional Entanglement Swapping for   Continuous Variables",
    "url": "https://arxiv.org/abs/quant-ph/0407024"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e2caf919-f3a0-4c69-b7d3-992cd0cfb414",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}