{
  "annotation_id": "0b095586-c1b0-426d-b92e-bcf6a51fdaf9",
  "date_created": "2026-03-02T18:02:27.114000Z",
  "date_modified": "2026-03-02T18:02:27.114000Z",
  "file_hash": "c3f7b53bddbb219e5f0e1f675d2eb14b534172a7659de2016c37ae56c6ded959",
  "private": false,
  "record": {
    "abstract": "We study the security of quantum string commitment (QSC) protocols with group\ncovariant encoding scheme. First we consider a class of QSC protocol, which is\ngeneral enough to incorporate all the QSC protocols given in the preceding\nliteratures. Then among those protocols, we consider group covariant protocols\nand show that the exact upperbound on the binding condition can be calculated.\nNext using this result, we prove that for every irreducible representation of a\nfinite group, there always exists a corresponding nontrivial QSC protocol which\nreaches a level of security impossible to achieve classically.",
    "arxiv_id": "quant-ph/0606030",
    "authors": [
      "Toyohiro Tsurumaru"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.74.042307",
    "journal_ref": "Phys. Rev. A, 74, 042307 (2006)",
    "title": "Group Covariant Protocols for Quantum String Commitment",
    "url": "https://arxiv.org/abs/quant-ph/0606030"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ad0170fc-986f-4abc-a8d9-f714221e2c0c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}