{
  "annotation_id": "6b23f168-46de-4f7b-8a51-6186b4211c85",
  "date_created": "2026-03-02T18:01:39.099000Z",
  "date_modified": "2026-03-02T18:01:39.099000Z",
  "file_hash": "a0c5b983588e861935ec9e020454e7163480fbcba7f4002904dbb0f2a79055b5",
  "private": false,
  "record": {
    "abstract": "A detailled analysis of quantum key distribution employing entangled states\nis presented. We tested a system based on photon pairs entangled in energy-time\noptimized for long distance transmission. It is based on a Franson type set-up\nfor monitoring quantum correlations, and uses a protocol analogous to BB84.\nPassive state preparation is implemented by polarization multiplexing in the\ninterferometers. We distributed a sifted key of 0.4 Mbits at a raw rate of 134\nHz and with an error rate of 8.6% over a distance of 8.5 kilometers. We discuss\nthoroughly the noise sources and practical difficulties associated with\nentangled states systems. Finally the level of security offered by this system\nis assessed and compared with that of faint laser pulses systems.",
    "arxiv_id": "quant-ph/0008039",
    "authors": [
      "Gregoire Ribordy",
      "Juergen Brendel",
      "Jean-Daniel Gautier",
      "Nicolas Gisin",
      "Hugo Zbinden"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.63.012309",
    "title": "Long distance entanglement based quantum key distribution",
    "url": "https://arxiv.org/abs/quant-ph/0008039"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1093bed3-d40b-49c0-ada6-3d2ee9cf1bb1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}