{
  "annotation_id": "68a60f30-3684-4e12-8198-9e2143ebcb9e",
  "date_created": "2026-03-02T18:02:27.631000Z",
  "date_modified": "2026-03-02T18:02:27.631000Z",
  "file_hash": "b1c2e542538fdc02c5b6fe0945357db378c6ec16af3a2ded40616af96e6d3e91",
  "private": false,
  "record": {
    "abstract": "We construct a class of quantum channels in arbitrary dimensions for which\nentanglement improves the performance of the channel. The channels have\ncorrelated noise and when the level of correlation passes a critical value we\nsee a sharp transition in the optimal input states (states which minimize the\noutput entropy) from separable to maximally entangled states. We show that for\na subclass of channels with some extra conditions, including the examples which\nwe consider, the states which minimize the output entropy are the ones which\nmaximize the mutual information.",
    "arxiv_id": "quant-ph/0603223",
    "authors": [
      "V. Karimipour",
      "L. Memarzadeh"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.74.032332",
    "journal_ref": "Phys. Rev. A 74, 032332 (2006).",
    "title": "Transition behavior in the capacity of correlated-noisy channels in   arbitrary dimensions",
    "url": "https://arxiv.org/abs/quant-ph/0603223"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5c8d2f13-2be2-436e-bce4-94e37c840300",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}