{
  "annotation_id": "9de7a6db-30d0-4e4a-94cb-1a3bea0a4f88",
  "date_created": "2026-03-02T18:01:58.915000Z",
  "date_modified": "2026-03-02T18:01:58.915000Z",
  "file_hash": "ec7424583c2a08c5aa5a1d4ad1fd33d392771013fd69ffbb9f4db8b07a664514",
  "private": false,
  "record": {
    "abstract": "An experimental scheme is proposed to test Bell\u0027s inequality by using\nsuperconducting nanocircuits. In this scheme, quantum entanglement of a pair of\ncharge qubits separated in a sufficient long distance may be created by cavity\nquantum electrodynamic techniques; the population of qubits is experimentally\nmeasurable by dc currents through the probe junctions, and one measured outcome\nmay be recorded for every experiment. Therefore, both locality and detection\nefficiency loopholes should be closed in the same experiment. We also propose a\nuseful method to measure the amount of entanglement based on the concurrence\nbetween Josephson qubits. The measurable variables for Bell\u0027s inequality as\nwell as the entanglement are expressed in terms of a useful phase-space Q\nfunction.",
    "arxiv_id": "quant-ph/0304156",
    "authors": [
      "Guang-Ping He",
      "Shi-Liang Zhu",
      "Z. D. Wang",
      "Hua-Zhong Li"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.68.012315",
    "journal_ref": "Phys. Rev. A 68, 012315 (2003)",
    "title": "Testing Bell\u0027s inequality and measuring the entanglement using   superconducting nanocircuits",
    "url": "https://arxiv.org/abs/quant-ph/0304156"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ec1e9b31-c711-4d98-8d64-d0431a23b463",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}