{
  "annotation_id": "bbe704fc-ef6f-4cec-90d9-9d70094e8d7e",
  "date_created": "2026-03-02T18:02:23.731000Z",
  "date_modified": "2026-03-02T18:02:23.731000Z",
  "file_hash": "de0fdd25d60be94357e56dad22bce916941442df00136c2ae6c54d4088440132",
  "private": false,
  "record": {
    "abstract": "We propose two Quantum Direct Communication (QDC) protocols with user\nauthentication. Users can identify each other by checking the correlation of\nGreenberger-Horne-Zeilinger (GHZ) states. Alice can directly send a secret\nmessage to Bob using the remaining GHZ states after authentication. Our second\nQDC protocol can be used even though there is no quantum link between Alice and\nBob. The security of the transmitted message is guaranteed by properties of\nentanglement of GHZ states.",
    "arxiv_id": "quant-ph/0512051",
    "authors": [
      "Hwayean Lee",
      "Jongin Lim",
      "HyungJin Yang"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.73.042305",
    "title": "Quantum Direct Communication with Authentication",
    "url": "https://arxiv.org/abs/quant-ph/0512051"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e602b31d-8aa3-4f0e-8e84-7e7729dbd54c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}