{
  "annotation_id": "6d28d427-11dd-478d-a669-9af83b44315f",
  "date_created": "2026-03-02T18:02:15.898000Z",
  "date_modified": "2026-03-02T18:02:15.898000Z",
  "file_hash": "37a75e791d291a0ac836098b86080db8f1a1057afc14aa19e526bf93dce5f24a",
  "private": false,
  "record": {
    "abstract": "To increase dramatically the distance and the secure key generation rate of\nquantum key distribution (QKD), the idea of quantum decoys--signals of\ndifferent intensities--has recently been proposed. Here, we present the first\nexperimental implementation of decoy state QKD. By making simple modifications\nto a commercial quantum key distribution system, we show that a secure key\ngeneration rate of 165bit/s, which is 1/4 of the theoretical limit, can be\nobtained over 15km of a Telecom fiber. We also show that with the same\nexperimental parameters, not even a single bit of secure key can be extracted\nwith a non-decoy-state protocol. Compared to building single photon sources,\ndecoy state QKD is a much simpler method for increasing the distance and key\ngeneration rate of unconditionally secure QKD.",
    "arxiv_id": "quant-ph/0503192",
    "authors": [
      "Yi Zhao",
      "Bing Qi",
      "Xiongfeng Ma",
      "Hoi-Kwong Lo",
      "Li Qian"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.96.070502",
    "journal_ref": "Physical Review Letters 96, 070502 (2006).",
    "title": "Experimental Quantum Key Distribution with Decoy States",
    "url": "https://arxiv.org/abs/quant-ph/0503192"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e5e2d28a-2e56-4b08-82ba-cb355710c96d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}