{
  "annotation_id": "8b483640-d638-46b3-8b9e-e22f5f9fb2b1",
  "date_created": "2026-03-02T18:01:48.899000Z",
  "date_modified": "2026-03-02T18:01:48.899000Z",
  "file_hash": "0efa27b785121edb0651ddbb5c98172b6171c473190d40841b8ca3903b5940ac",
  "private": false,
  "record": {
    "abstract": "A novel communication protocol based on an entangled pair of qubits is\npresented, allowing secure direct communication from one party to another\nwithout the need for a shared secret key. Since the information is transferred\nin a deterministic manner, no qubits have to be discarded and every qubit\ncarries message information. The security of the transfer against active and\npassive eavesdropping attacks is provided. The detection rate of active attacks\nis at least 25%. The protocol works with a quantum efficiency of 1 bit per\nqubit transmitted.",
    "arxiv_id": "quant-ph/0203064",
    "authors": [
      "Kim Bostroem"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.89.187902",
    "title": "Secure direct communication using entanglement",
    "url": "https://arxiv.org/abs/quant-ph/0203064"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c88e470a-f0ad-4a2d-86c9-44685506934b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}