{
  "annotation_id": "df967da5-45f4-41c8-8558-00fe2e219c04",
  "date_created": "2026-03-02T18:02:48.528000Z",
  "date_modified": "2026-03-02T18:02:48.528000Z",
  "file_hash": "da0fdd0da2db69c5a2585e5187ce4a83edb9cf3dddc3b35cd727cf873e8e17e7",
  "private": false,
  "record": {
    "abstract": "An entangled pair of photons (1 and 2) are emitted to opposite directions. A\nnarrow slit is placed in the path of photon 1 to provide precise knowledge of\nits position on the $y$ axis and this also determines the precise $y$ position\nof its twin, photon 2, due to quantum entanglement. Is photon 2 going to\nexperience a greater uncertainty in momentum, i.e., a greater $\\Delta p_{y}$,\ndue to the precise knowledge of its position $y$? The experimental data shows\n$\\Delta y\\Delta p_{y}\u003c\\hbar $ for photon 2. Can this recent realization of the\nhistorical thought experiment of Karl Popper signal a violation of the\nuncertainty principle?",
    "arxiv_id": "quant-ph/9905039",
    "authors": [
      "Yoon-Ho Kim",
      "Yanhua Shih"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Found.Phys. 29 (1999) 1849",
    "title": "Experimental realization of Popper\u0027s Experiment: Violation of the   Uncertainty Principle?",
    "url": "https://arxiv.org/abs/quant-ph/9905039"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d85dc49d-5af2-4c96-ac9a-9a1bb0e52c35",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}