{
  "annotation_id": "18bcc4ee-e9df-44df-b792-d33b1c3be77d",
  "date_created": "2026-03-02T18:01:59.484000Z",
  "date_modified": "2026-03-02T18:01:59.484000Z",
  "file_hash": "3ca18008a2d3c15928d5adccab83560e30253cea8dbf03db106567ddf8593f1f",
  "private": false,
  "record": {
    "abstract": "We propose a new method for detecting entanglement of two qubits and discuss\nits relation with the Clauser-Horne-Shimony-Holt (CHSH) Bell inequality.\nWithout the need for full quantum tomography for the density matrix we can\nexperimentally detect the entanglement by measuring less than 9 local\nobservables for any given state. We show that this test is stronger than the\nCHSH-Bell inequality and also gives an estimation for the degree of\nentanglement. If prior knowledge is available we can further greatly reduce the\nnumber of required local observables. The test is convenient and feasible with\npresent experimental technology.",
    "arxiv_id": "quant-ph/0306137",
    "authors": [
      "Kai Chen",
      "Ling-An Wu"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Detection of entanglement and Bell\u0027s inequality violation",
    "url": "https://arxiv.org/abs/quant-ph/0306137"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "cf574cd8-1328-4187-ae7c-9cafc75bfe3c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}