{
  "annotation_id": "6ae6b33a-2702-41c2-8804-bfe6c804e514",
  "date_created": "2026-03-02T18:02:00.111000Z",
  "date_modified": "2026-03-02T18:02:00.111000Z",
  "file_hash": "4eb3918e983bce829c196e1edbbaae455ef2f0b02dbaa015dc6549efd66778e0",
  "private": false,
  "record": {
    "abstract": "We show an improved ping-pong protocol which is based on the protocol showed\nby Kim Bostrom and Timo Felbinger [Phys. Rev. Lett. 89, 187902 (2002);\nquant-ph/0209040]. We show that our protocol is asymptotically secure key\ndistribution and quasisecure direct communication using a single photon\nresource. And this protocol can be can be carried out with great efficiency and\nspeed using today\u0027s technology.",
    "arxiv_id": "quant-ph/0304033",
    "authors": [
      "Qing-yu Cai"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Deterministic Secure Direct Communication Using Mixed state",
    "url": "https://arxiv.org/abs/quant-ph/0304033"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "42943fcc-5e4e-42b8-8d87-45291fe83811",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}