{
  "annotation_id": "1e1cca82-218d-468e-b6cb-9922758d84f9",
  "date_created": "2026-03-02T18:02:15.955000Z",
  "date_modified": "2026-03-02T18:02:15.955000Z",
  "file_hash": "8977fac375cf8c49c949f4784ce134a7e47e97c4ff33e5b34f33894ffe681622",
  "private": false,
  "record": {
    "abstract": "The BB84 and B92 protocols based on polarization coding are usually used in\nfree-space quantum key distribution. Polarization tracking technique is one of\nthe key techniques in the satellite quantum key distribution. Because the\nphoton polarization state will be changed as a result of the satellite\nmovement, both the transmitter and receiver need to have the ability to track\nthe polarization orientation variation to accomplish the quantum cryptography\nprotocols. In this paper, the polarization tracking principles are analyzed\nbased on Faraday effect and the half-wave plate. The transforms of six photon\npolarization states in three conjugative bases are given and the quantum key\ncoding principles based on the polarization tracking are analyzed for the BB84\nand B92 protocols.",
    "arxiv_id": "quant-ph/0504077",
    "authors": [
      "Jing Ma",
      "Guangyu Zhang",
      "Yiwen Rong",
      "Liying Tan"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Theoretical study of polarization tracking in satellite quantum key   distribution",
    "url": "https://arxiv.org/abs/quant-ph/0504077"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6b6d58e3-2692-4c36-a04e-e9e4c7e3fcad",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}