{
  "annotation_id": "0606af98-c918-41b2-96b2-5a4bd5f381e5",
  "date_created": "2026-03-02T18:02:09.546000Z",
  "date_modified": "2026-03-02T18:02:09.546000Z",
  "file_hash": "d75fae538e402584a645168e536ae50aa532fb11adf516ad967cb89770b591c2",
  "private": false,
  "record": {
    "abstract": "In all existing protocols of private communication with encryption and\ndecryption, the pre-shared key can be used for only one time. We give a\ndeterministic quantum key expansion protocol where the pre-shared key can be\nrecycled. Our protocol is exponentially secure. Our protocol costs less qubits\nand almost zero classical communications with authentication steps being\nincluded. Since our protocol can distribute the deterministic bits, it can also\nbe used for direct communication.",
    "arxiv_id": "quant-ph/0407011",
    "authors": [
      "X. B. Wang"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "A protocol for secure and deterministic quantum key expansion",
    "url": "https://arxiv.org/abs/quant-ph/0407011"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "278cf71a-8b3d-40fb-b2a8-e33572f4c985",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}