{
  "annotation_id": "459f93c1-5072-466f-b89c-ae549488f631",
  "date_created": "2026-03-02T18:01:55.996000Z",
  "date_modified": "2026-03-02T18:01:55.996000Z",
  "file_hash": "4074bacc2a3fa78294cf3dc0626f63e0eac6da31974576c519a37a0c95709fa0",
  "private": false,
  "record": {
    "abstract": "Here we analyze the practical implication of the existing quantum data hiding\nprotocol with Bell states produced with optical downconverter. We show that the\nuncertainty for the producing of the Bell states with spontaneous parameter\ndown-conversion should be taken into account, because it will cause serious\ntrouble to the hider encoding procedure. A set of extended Bell states and a\ngeneralized Bell states analyzer are proposed to describe and analyze the\npossible states of two photons distributing in two paths. Then we present a\nmethod to integrate the above uncertainty of Bell states preparation into the\ndating hiding procedure, when we encode the secret with the set of extended\nBell states. These modifications greatly simplify the hider\u0027s encoding\noperations, and thus paves the way for the implementation of quantum data\nhiding with present-day quantum optics.",
    "arxiv_id": "quant-ph/0301085",
    "authors": [
      "Guang-Can Guo",
      "Guo-Ping Guo"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.68.044303",
    "journal_ref": "Phy. Rev. A 68, 044303 (2003)",
    "title": "Quantum data hiding with spontaneous parameter down-conversion",
    "url": "https://arxiv.org/abs/quant-ph/0301085"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "62d162df-b301-4a71-8eff-b70c6af267ca",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}