{
  "annotation_id": "d2c932e5-645b-40a5-884b-8f64cf484c5c",
  "date_created": "2026-03-02T18:02:13.321000Z",
  "date_modified": "2026-03-02T18:02:13.321000Z",
  "file_hash": "d190ac47171649c44a6f470c0503c6e7b73c2e9f63cc454d50a1e01e9dff506d",
  "private": false,
  "record": {
    "abstract": "We present an experimental scheme for the implementation of arbitrary\ngeneralized measurements, represented by positive-operator valued measures, on\nthe polarization of single photons, using linear optical devices. Further, we\nexperimentally test a Kochen-Specker theorem for single qubits using positive\noperator-valued measures. Our experimental results for the first time disprove\nnon-contextual hidden-variable theories, even for single qubits.",
    "arxiv_id": "quant-ph/0412049",
    "authors": [
      "Qiang Zhang",
      "Hui Li",
      "Tao Yang",
      "Juan Yin",
      "Jiangfeng Du",
      "Jian-Wei Pan"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Experimental Test of the Kochen-Specker Theorem for Single Qubits using   Positive Operator-Valued Measures",
    "url": "https://arxiv.org/abs/quant-ph/0412049"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "668d3731-ca47-44e4-9be6-9d4645636885",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}