{
  "annotation_id": "271013a9-922e-4f43-b5a1-48c304d29b7e",
  "date_created": "2026-03-02T18:02:41.602000Z",
  "date_modified": "2026-03-02T18:02:41.602000Z",
  "file_hash": "c9ac141c73d320ce7ca4b13cef36d082011695e32b11d3f6ab0b46104e03e523",
  "private": false,
  "record": {
    "abstract": "Energy and time entangled photons at a wavelength of 1310 nm are produced by\nparametric downconversion in a KNbO3 crystal and are sent into all-fiber\ninterferometers using a telecom fiber network. The two interferometers of this\nFranson-type test of the Bell-inequality are located 10.9 km apart from one\nanother. Two-photon fringe visibilities of up to 81.6 % are obtained. These\nstrong nonlocal correlations support the nonlocal predictions of quantum\nmechanics and provide evidence that entanglement between photons can be\nmaintained over long distances.",
    "arxiv_id": "quant-ph/9707042",
    "authors": [
      "W. Tittel",
      "J. Brendel",
      "B. Gisin",
      "T. Herzog",
      "H. Zbinden",
      "N. Gisin"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.57.3229",
    "journal_ref": "Phys. Rev. A 57, 3229 (1998)",
    "title": "Experimental demonstration of quantum correlations over more than 10 km",
    "url": "https://arxiv.org/abs/quant-ph/9707042"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9bb1b15a-65dd-403b-b112-5d4d42697aa4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}