{
  "annotation_id": "3f88e465-0a0c-4f55-914c-eef3126da9b4",
  "date_created": "2026-03-02T18:02:44.848000Z",
  "date_modified": "2026-03-02T18:02:44.848000Z",
  "file_hash": "dd4f9ca3a2ed634925a3129b1408418293af134ac854ae873fef48e2e0d979e3",
  "private": false,
  "record": {
    "abstract": "We analyse the role of entanglement for transmission of classical information\nthrough a memoryless depolarising channel. Using the isotropic character of\nthis channel we prove analytically that the mutual information cannot be\nincreased by encoding classical bits into entangled states of two qubits.",
    "arxiv_id": "quant-ph/9903033",
    "authors": [
      "D. Bruss",
      "L. Faoro",
      "C. Macchiavello",
      "M. Palma"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1080/09500340008244045",
    "journal_ref": "J.Mod.Opt. 47 (2000) 325",
    "title": "Quantum entanglement and classical communication through a depolarising   channel",
    "url": "https://arxiv.org/abs/quant-ph/9903033"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "06accb92-47e5-4355-9822-ce395fae77d9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}