{
  "annotation_id": "093c3aa0-fc2e-41c8-a6b8-43e04593e42a",
  "date_created": "2026-03-02T18:01:59.932000Z",
  "date_modified": "2026-03-02T18:01:59.932000Z",
  "file_hash": "6890d558631b7e317ae0405c4a7e2f68565847ca3b8af32e32446a105a486af1",
  "private": false,
  "record": {
    "abstract": "The communication protocol of Home and Whitaker [Phys. Rev. A 67, 022306\n(2003)] is examined in some detail, and found to work equally well using a\nseparable state. The protocol is in fact completely classical, based on simple\npost-selection of suitable experimental runs. The quantum cryptography protocol\nproposed in the same publication is also examined, and is found to indeed need\nquantum properties for the system to be secure. However, the security test\nproposed in the mentioned paper is found to be insufficient, and a modification\nis proposed here that will ensure security.",
    "arxiv_id": "quant-ph/0308107",
    "authors": [
      "Jan-\u00c5ke Larsson"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.69.042317",
    "journal_ref": "Phys. Rev. A, 69:042317 (2004)",
    "title": "No information flow using statistical fluctuations, and quantum   cryptography",
    "url": "https://arxiv.org/abs/quant-ph/0308107"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fede1d75-26eb-41b8-a430-17f2ebbaca8d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}