{
  "annotation_id": "91eca949-8129-4575-9a46-038d71cf4c0d",
  "date_created": "2026-03-02T18:02:16.603000Z",
  "date_modified": "2026-03-02T18:02:16.603000Z",
  "file_hash": "e0765ce28acee9993d737a0031646a46e0d2cb9f792f9475e7bada1fd499d2d8",
  "private": false,
  "record": {
    "abstract": "We realize an end-to-end no-switching quantum key distribution protocol using\ncontinuous-wave coherent light. We encode weak broadband Gaussian modulations\nonto the amplitude and phase quadratures of light beams at the Shannon\u0027s\ninformation limit. Our no-switching protocol achieves high secret key rate via\na post-selection protocol that utilizes both quadrature information\nsimultaneously. We establish a secret key rate of 25 Mbits/s for a lossless\nchannel and 1 kbit/s, per 17 MHz of detected bandwidth, for 90% channel loss.\nSince our scheme is truly broadband, it can potentially deliver orders of\nmagnitude higher key rates by extending the encoding bandwidth with higher-end\ntelecommunication technology.",
    "arxiv_id": "quant-ph/0504004",
    "authors": [
      "Andrew M. Lance",
      "Thomas Symul",
      "Vikram Sharma",
      "Christian Weedbrook",
      "Timothy C. Ralph",
      "Ping Koy Lam"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.95.180503",
    "journal_ref": "Phys. Rev. Lett. 95, 180503 (2005)",
    "title": "No-Switching Quantum Key Distribution using Broadband Modulated Coherent   Light",
    "url": "https://arxiv.org/abs/quant-ph/0504004"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4523b075-c3a7-4f35-a983-a2645c3a61cf",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}