{
  "annotation_id": "4ed76404-3794-488b-99a8-61e8b51efa63",
  "date_created": "2026-03-02T18:01:48.933000Z",
  "date_modified": "2026-03-02T18:01:48.933000Z",
  "file_hash": "4991d9e20147510345cf9dd45b3508cd844574350d730c4fec2c9aaf4d8f0807",
  "private": false,
  "record": {
    "abstract": "Recently quantum states discrimination has been frequently studied. In this\npaper we study them from the other way round, the likeness of two quantum\nstates. The fidelity is used to describe the likeness of two quantum states.\nThen we presented a scheme to obtain the fidelity of two unknown qubits\ndirectly from the integral area of the spectra of the assistant qubit(spin) on\nan NMR Quantum Information Processor. Finally we demonstrated the scheme on a\nthree-qubit quantum information processor. The experimental data are consistent\nwith the theoretical expectation with an average error of 0.05, which confirms\nthe scheme.",
    "arxiv_id": "quant-ph/0204049",
    "authors": [
      "Fei Xue",
      "Jiangfeng Du",
      "Xianyi Zhou",
      "Rongdian Han",
      "Jihui Wu"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0256-307X/20/10/304",
    "journal_ref": "Chin. Phys. Lett. 2003, vol.20 No.10 p1669",
    "title": "Experimentally obtaining the Likeness of Two Unknown Quantum States on   an NMR Quantum Information Processor",
    "url": "https://arxiv.org/abs/quant-ph/0204049"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "79954a51-e8a8-4234-acb4-114f440606ab",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}