{
  "annotation_id": "75689e17-8141-44eb-8df1-5364dd5ebfbd",
  "date_created": "2026-03-02T18:02:20.414000Z",
  "date_modified": "2026-03-02T18:02:20.414000Z",
  "file_hash": "e1913181ebdb6fc5301ff43ccb6ec1c4ca0e3bdf61ac41e9fb706b16a9457151",
  "private": false,
  "record": {
    "abstract": "The crucial issue of quantum communication protocol is its security. In this\npaper, we show that all the deterministic and direct two-way quantum\ncommunication protocols, sometimes called ping-pong (PP) protocols, are\ninsecure when an eavesdropper uses the invisible photon to eavesdrop on the\ncommunication. With our invisible photon eavesdropping (IPE) scheme, the\neavesdropper can obtain full information of the communication with zero risk of\nbeing detected. We show that this IPE scheme can be implemented experimentally\nwith current technology. Finally, a possible improvement of PP communication\nprotocols security is proposed. PACS:03.67.Hk",
    "arxiv_id": "quant-ph/0508002",
    "authors": [
      "Qing-yu Cai"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/j.physleta.2005.10.050",
    "journal_ref": "Phys. Lett. A 351, 23 (2006)",
    "title": "Eavesdropping on the \"ping-pong\" type quantum communication protocols   with invisible photon",
    "url": "https://arxiv.org/abs/quant-ph/0508002"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2385dd62-7897-41d6-91d1-4e7c5bce1eec",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}