{
  "annotation_id": "1e6a5ffd-93ee-4351-97b1-e67d8a53cb7c",
  "date_created": "2026-03-02T18:02:16.982000Z",
  "date_modified": "2026-03-02T18:02:16.982000Z",
  "file_hash": "d8d7096982ebe50dba178aed26554cf0ced1445009732e54887999016af9e49e",
  "private": false,
  "record": {
    "abstract": "We study the stability under quantum noise effects of the quantum privacy\namplification protocol for the purification of entanglement in quantum\ncryptography. We assume that the E91 protocol is used by two communicating\nparties (Alice and Bob) and that the eavesdropper Eve uses the isotropic\nBu\\v{z}ek-Hillery quantum copying machine to extract information. Entanglement\npurification is then operated by Alice and Bob by means of the quantum privacy\namplification protocol and we present a systematic numerical study of the\nimpact of all possible single-qubit noise channels on this protocol. We find\nthat both the qualitative behavior of the fidelity of the purified state as a\nfunction of the number of purification steps and the maximum level of noise\nthat can be tolerated by the protocol strongly depend on the specific noise\nchannel. These results provide valuable information for experimental\nimplementations of the quantum privacy amplification protocol.",
    "arxiv_id": "quant-ph/0505177",
    "authors": [
      "Giuliano Benenti",
      "Sara Felloni",
      "Giuliano Strini"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1140/epjd/e2006-00006-6",
    "journal_ref": "Eur. Phys. J. D 38, 389 (2006)",
    "title": "Effects of single-qubit quantum noise on entanglement purification",
    "url": "https://arxiv.org/abs/quant-ph/0505177"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "574ff17f-8d64-4576-83c2-eb5f9c548bf1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}