{
  "annotation_id": "d82f36b7-b8f3-41ad-b41b-55ee08c9a65c",
  "date_created": "2026-03-02T18:02:06.576000Z",
  "date_modified": "2026-03-02T18:02:06.576000Z",
  "file_hash": "69bfae3710fbf215649253075676629d5b485d65dc12797c6561611b9d68bb80",
  "private": false,
  "record": {
    "abstract": "We report experimental distribution of time-bin entangled qubits over 50 km\nof optical fibers. Using actively stabilized preparation and measurement\ndevices we demonstrate violation of the CHSH Bell inequality by more than 15\nstandard deviations without removing the detector noise. In addition we report\na proof of principle experiment of quantum key distribution over 50 km of\noptical fibers using entangled photon.",
    "arxiv_id": "quant-ph/0404124",
    "authors": [
      "I. Marcikic",
      "H. de Riedmatten",
      "W. Tittel",
      "H. Zbinden",
      "M. Legre",
      "N. Gisin"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.93.180502",
    "title": "Distribution of time-bin qubits over 50 km of optical fiber",
    "url": "https://arxiv.org/abs/quant-ph/0404124"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c3408b2c-08fb-4505-86b8-f2e12b86908e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}