{
  "annotation_id": "99682be4-efc5-4a94-a249-ac4b8ff3b3a2",
  "date_created": "2026-03-02T18:02:20.702000Z",
  "date_modified": "2026-03-02T18:02:20.702000Z",
  "file_hash": "a2c132907f0f1c6ebf60ff8a0fd4eab8d0c66ecd56dbf6bbdee26d2b73821d82",
  "private": false,
  "record": {
    "abstract": "Joint, or simultaneous, measurements of non-commuting observables are\npossible within quantum mechanics, if one accepts an increase in the variances\nof the jointly measured observables. In this paper, we discuss joint\nmeasurements of a spin 1/2 particle along any two directions. Starting from an\noperational locality principle, it is shown how to obtain a bound on how sharp\nthe joint measurement can be. We give a direct interpretation of this bound in\nterms of an uncertainty relation.",
    "arxiv_id": "quant-ph/0509152",
    "authors": [
      "Erika Andersson",
      "Stephen M. Barnett",
      "Alain Aspect"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.042104",
    "journal_ref": "Phys. Rev. A 72, 042104 (2005)",
    "title": "Joint measurements of spin, operational locality and uncertainty",
    "url": "https://arxiv.org/abs/quant-ph/0509152"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ec7dd352-65d0-4ce8-b826-ab14e4011c65",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}