{
  "annotation_id": "a98911de-6abd-48f8-90f7-53e8fe7f681c",
  "date_created": "2026-03-02T18:02:03.233000Z",
  "date_modified": "2026-03-02T18:02:03.233000Z",
  "file_hash": "5bf4de65f65556782aeb83d4b209fd22b5ff0882dd0d8e9f434fa7ac255f2484",
  "private": false,
  "record": {
    "abstract": "A theoretical scheme for controlled and secure direct communication is\nproposed. The communication is based on GHZ state and controlled quantum\nteleportation. After insuring the security of the quantum channel (a set of\nqubits in the GHZ state), Alice encodes the secret message directly on a\nsequence of particle states and transmits them to Bob supervised by Charlie\nusing controlled quantum teleportation. Bob can read out the encoded messages\ndirectly by the measurement on his qubits. In this scheme, the controlled\nquantum teleportation transmits Alice\u0027s message without revealing any\ninformation to a potential eavesdropper. Because there is not a transmission of\nthe qubit carrying the secret messages between Alice and Bob in the public\nchannel, it is completely secure for controlled and direct secret communication\nif perfect quantum channel is used. The feature of this scheme is that the\ncommunication between two sides depends on the agreement of the third side.",
    "arxiv_id": "quant-ph/0312004",
    "authors": [
      "Ting Gao"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1515/zna-2004-0909",
    "journal_ref": "Z. Naturforsch. 59a (2004) 597",
    "title": "Controlled and secure direct communication using GHZ state and   teleportation",
    "url": "https://arxiv.org/abs/quant-ph/0312004"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "60b175af-0e91-4886-bb69-3bc41096911f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}