{
  "annotation_id": "18c06aff-fd21-4c6d-9c7a-17df31b4088d",
  "date_created": "2026-03-02T18:01:52.931000Z",
  "date_modified": "2026-03-02T18:01:52.931000Z",
  "file_hash": "6eb0e225f521b5ed01911ed24ba03513767bfa8362993d24aef78e73736fa322",
  "private": false,
  "record": {
    "abstract": "We demonstrate that secure communication using coherent states is possible.\nThe optimal eavesdropping strategy for an M-ry ciphering scheme shows that the\nminimum probability of error in a measurement for bit determination can be made\narbitrarily close to the pure guessing value P_e=1/2. This ciphering scheme can\nbe optically amplified without degrading the security level. New avenues are\nopen to secure communications at high speeds in fiber-optic or free-space\nchannels.",
    "arxiv_id": "quant-ph/0210089",
    "authors": [
      "Geraldo A. Barbosa",
      "Eric Corndorf",
      "Prem Kumar",
      "Horace P. Yuen",
      "G. Mauro D\u0027Ariano",
      "Matteo G. A. Paris",
      "Paolo Perinotti"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Secure communication using coherent states",
    "url": "https://arxiv.org/abs/quant-ph/0210089"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a85740db-575c-4652-996d-cab7d75bcc47",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}