{
  "annotation_id": "be6c0cad-a3af-4a63-a655-ed4fbe4fb5a9",
  "date_created": "2026-03-02T18:01:48.830000Z",
  "date_modified": "2026-03-02T18:01:48.830000Z",
  "file_hash": "0ebd0d86759fea811d1bc4833c9cfe57420ec6fc0ab6ee0ab1af566c3ed7549d",
  "private": false,
  "record": {
    "abstract": "No verbal explanation can indicate a direction in space or the orientation of\na coordinate system. Only material objects can do it. In this article we\nconsider the use of a set of spin-\\half particles in an entangled state for\nindicating a direction, or a hydrogen atom in a Rydberg state for transmitting\na Cartesian frame. Optimal strategies are derived for the emission and\ndetection of the quantum signals.",
    "arxiv_id": "quant-ph/0201017",
    "authors": [
      "Asher Peres",
      "Petra F. Scudo"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Unspeakable quantum information",
    "url": "https://arxiv.org/abs/quant-ph/0201017"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ea64a7f4-c49f-4cff-9ecc-046445549d0e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}