{
  "annotation_id": "784965bc-1eba-400b-8a58-7591bad00ef1",
  "date_created": "2026-03-02T18:02:13.740000Z",
  "date_modified": "2026-03-02T18:02:13.740000Z",
  "file_hash": "2f6f9e534e55d5a368f596450e69d217950b81efca169324b57bbb39bb9b7f2d",
  "private": false,
  "record": {
    "abstract": "We investigate the utility of Einstein-Podolsky-Rosen correlations of the\nposition and momentum of photon pairs from parametric down-conversion in the\nimplementation of a secure quantum key distribution protocol. We show that\nsecurity is guaranteed by the entanglement between downconverted pairs, and can\nbe checked by either direct comparison of Alice and Bob\u0027s measurement results\nor evaluation of an inequality of the sort proposed by Mancini et al. (Phys.\nRev. Lett. 88, 120401 (2002)).",
    "arxiv_id": "quant-ph/0411183",
    "authors": [
      "M. P. Almeida",
      "S. P. Walborn",
      "P. H. Souto Ribeiro"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.022313",
    "title": "Experimental investigation of quantum key distribution with position and   momentum of photon pairs",
    "url": "https://arxiv.org/abs/quant-ph/0411183"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "751fb014-1a28-4d37-baf6-789bec2d88ca",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}