{
  "annotation_id": "be30274d-16ba-4aa9-bec8-1b783ae43c50",
  "date_created": "2026-03-02T18:01:45.454000Z",
  "date_modified": "2026-03-02T18:01:45.454000Z",
  "file_hash": "646aeb389341ddfa0e0df50eae2b0d6828945f22b9a5e4be8c2a404008862fad",
  "private": false,
  "record": {
    "abstract": "We give a first physical model for the quantum measurement of the spin\ndirection. It is an Arthurs-Kelly model that involves a kind of magnetic-dipole\ninteraction of the spin with three modes of radiation. We show that in a limit\nof infinite squeezing of radiation the optimal POVM for the measurement of the\nspin direction is achieved for spin 1/2.",
    "arxiv_id": "quant-ph/0110065",
    "authors": [
      "G. M. D\u0027Ariano",
      "P. Lo Presti",
      "M. F. Sacchi"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/S0375-9601(01)00809-X",
    "journal_ref": "Phys. Lett. A 292, 233 (2002).",
    "title": "A quantum measurement of the spin direction",
    "url": "https://arxiv.org/abs/quant-ph/0110065"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1aca062d-1628-45d0-b51b-919b8ba84073",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}