{
  "annotation_id": "b8c675d5-76c1-45db-a249-86bee3d1b7ea",
  "date_created": "2026-03-02T18:02:17.257000Z",
  "date_modified": "2026-03-02T18:02:17.257000Z",
  "file_hash": "43aced3325d6be9f0fbd0671f44eed58f4a6be7543b8f8c87969aa4be10a9721",
  "private": false,
  "record": {
    "abstract": "This paper shall investigate Yuen protocol, so called Y-00, which can realize\na randomized stream cipher with high bit rate(Gbps) for long distance(several\nhundreds km). The randomized stream cipher with randomization by quantum noise\nbased on Y-00 is called quantum stream cipher in this paper, and it may have\nsecurity against known plaintext attacks which has no analog with any\nconventional symmetric key ciphers. We present a simple cryptanalysis based on\nan attacker\u0027s heterodyne measurement and the quantum unambiguous measurement to\nmake clear the strength of Y-00 in real communication. In addition, we give a\ndesign for the implementation of an intensity modulation scheme and report the\nexperimental demonstration of 1 Gbps quantum stream cipher through 20 km long\ntransmission line.",
    "arxiv_id": "quant-ph/0507043",
    "authors": [
      "Osamu Hirota",
      "Masaki Sohma",
      "Masaru Fuse",
      "Kentaro Kato"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.022335",
    "title": "Quantum stream cipher by Yuen 2000 protocol: Design and experiment by   intensity modulation scheme",
    "url": "https://arxiv.org/abs/quant-ph/0507043"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5fe58f15-0e99-4dc6-99dd-b110536fc78b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}