{
  "annotation_id": "a7ccc7c1-8de6-4c36-af3a-40d926c346ea",
  "date_created": "2026-03-02T18:02:34.542000Z",
  "date_modified": "2026-03-02T18:02:34.542000Z",
  "file_hash": "5b632e852ce8ddb2e50dcf020488dd50bda7911a3673904fd313fe503fb1c4a2",
  "private": false,
  "record": {
    "abstract": "It is shown that the full unknown state of a spin-1/2 system, S, which,\nwithin Born\u0027s statistical interpretation, is meant as the state of an ensamble\nof identically prepared systems, can be determined with a simultaneous\nmeasurement with the help of an \"assistant\" system A whose initial state is\nknown. The idea is to let S and A interact with each other in a known way\nduring a proper interaction time, to measure simultaneously two observables,\none of S and one of A and their correlation.\n  One thus determines the three unknown components of the polarization vector\nof S by means of repeated experiments using a unique setting. In this way one\ncan measure simultaneously all the non-commutative observables of S, which\nmight seem prohibited in quantum mechanics.",
    "arxiv_id": "quant-ph/0702013",
    "authors": [
      "G. Aquino",
      "B. Mehmani"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1142/9789812771186_0009",
    "title": "Simultaneous Measurement of Non-Commuting Observables",
    "url": "https://arxiv.org/abs/quant-ph/0702013"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5aa30ba7-e9ca-4aab-9c85-70ef989d323f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}