{
  "annotation_id": "b122660f-7e8c-4bcd-b08f-314cb7159be1",
  "date_created": "2026-03-02T18:02:45.089000Z",
  "date_modified": "2026-03-02T18:02:45.089000Z",
  "file_hash": "4c24373615b1ae3bdc7e1a185d828d943bda623668b24b7e9936d9d26e46b855",
  "private": false,
  "record": {
    "abstract": "We consider two different ways to encode quantum information, by parallel or\nanti-parallel pairs of spins. We find that there is more information in the\nanti-parallel ones. This purely quantum mechanical effect is due to\nentanglement, not of the states but occuring in the course of the measuring\nprocess. We also introduce a range of quantum information processing machines,\nsuch as spin-flip and anti-cloning.",
    "arxiv_id": "quant-ph/9901072",
    "authors": [
      "N. Gisin",
      "S. Popescu"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.83.432",
    "journal_ref": "Physical Review Letters, 82, 432-435, 1999",
    "title": "Spin flips and quantum information for anti-parallel spins",
    "url": "https://arxiv.org/abs/quant-ph/9901072"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e9022edb-1f3b-4f6f-bde6-e305875c1b5d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}