{
  "annotation_id": "3ddaacf8-7844-4535-a166-c6509c25fe60",
  "date_created": "2026-03-02T18:01:38.975000Z",
  "date_modified": "2026-03-02T18:01:38.975000Z",
  "file_hash": "5a0b04164559f26c0caf9960320ad99da37eb0b2817136f22e49f4462870897c",
  "private": false,
  "record": {
    "abstract": "Quantum-correlated photon sources provide a means of suppressing multiple\nphoton emission and thus improving the security and efficiency of quasi\nsingle-photon quantum key distribution systems. We present illustrative\nphoton-counting statistics for a Poissonian source conditioned by photon number\nmeasurements on a fully correlated twin beam with a non-ideal photon counter.\nWe show that high photon counting efficiency is needed to obtain significant\nimprovement in channel efficiency (bits per symbol) and/or security (in the\nform of reduced Shannon entropy leakage) over a single beam source.",
    "arxiv_id": "quant-ph/0008013",
    "authors": [
      "PJ Edwards",
      "W N Cheung",
      "H van Pham",
      "G Ganesharajah",
      "P Lynam",
      "L Barbopoulos"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "A Note on Quantum Key Channel Efficiency and Security using Correlated   Photon Beam Transmitters",
    "url": "https://arxiv.org/abs/quant-ph/0008013"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9e22203a-14f5-404d-bdd9-c2a2d360efd7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}