{
  "annotation_id": "402cf98a-235a-4fa3-ac1a-74fbfa85d701",
  "date_created": "2026-03-02T18:01:51.843000Z",
  "date_modified": "2026-03-02T18:01:51.843000Z",
  "file_hash": "4990f148ba2673a9f7b7164e1f8a52f1fa5d393886c015a123633e602b38d425",
  "private": false,
  "record": {
    "abstract": "We have demonstrated quantum key distribution (QKD) over a 10-km, 1-airmass\natmospheric range during daylight and at night. Secret random bit sequences of\nthe quality required for the cryptographic keys used to initialize secure\ncommunications devices were transferred at practical rates with realistic\nsecurity. By identifying the physical parameters that determine the system\u0027s\nsecrecy efficiency, we infer that free-space QKD will be practical over much\nlonger ranges under these and other atmospheric and instrumental conditions.",
    "arxiv_id": "quant-ph/0206092",
    "authors": [
      "Richard J. Hughes",
      "Jane E. Nordholt",
      "Derek Derkacs",
      "Charles G. Peterson"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1367-2630/4/1/343",
    "title": "Practical free-space quantum key distribution over 10 km in daylight and   at night",
    "url": "https://arxiv.org/abs/quant-ph/0206092"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c3630a98-b5ac-4a7c-a130-483281ec3714",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}