{
  "annotation_id": "a9053f6a-3c1d-4239-985e-a7d2815f2d8a",
  "date_created": "2026-03-02T18:02:34.597000Z",
  "date_modified": "2026-03-02T18:02:34.597000Z",
  "file_hash": "29b5222c51548282ac587947e06cec2d71ed4c96233f58d0aaa3bc904c9048f5",
  "private": false,
  "record": {
    "abstract": "We consider explicitly two examples of d-dimensional quantum channels with\ncorrelated noise and show that, in agreement with previous results on Pauli\nqubit channels, there are situations where maximally entangled input states\nachieve higher values of the output mutual information than product states. We\nobtain a strong dependence of this effect on the nature of the noise\ncorrelations as well as on the parity of the space dimension, and conjecture\nthat when entanglement gives an advantage in terms of mutual information,\nmaximally entangled states achieve the channel capacity.",
    "arxiv_id": "quant-ph/0612219",
    "authors": [
      "E. Karpov",
      "D. Daems",
      "N. J. Cerf"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1007/s11080-006-9018-y",
    "journal_ref": "Open Sys. \u0026 Information Dyn. 13, 363 (2006)",
    "title": "Entanglement may enhance the channel capacity in arbitrary dimensions",
    "url": "https://arxiv.org/abs/quant-ph/0612219"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9f68646a-6379-4ae6-a3e8-d9cd91c8ba50",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}