{
  "annotation_id": "6ebc76f0-f067-49d2-80ac-c1720a4e4c8d",
  "date_created": "2026-03-02T18:02:30.762000Z",
  "date_modified": "2026-03-02T18:02:30.762000Z",
  "file_hash": "4a894e48e1fe517b63240ef873523d819935d9bc9996b85ca59be32b5a136e43",
  "private": false,
  "record": {
    "abstract": "In this paper we provide an operational method to detect multipartite\nentanglement in ensemble-based quantum computing. This method is based on the\nconcept of entanglement witness. We decompose the entanglement witness for each\nclass of multipartite entanglement into nonlocal operations in addition to\nlocal measurements. Individual single qubit measurements are performed\nsimultaneously, hence complete detection of entanglement is performed in a\nsingle run experiment. This approach is particularly important for experiments\nwhere it is operationally difficult to prepare several copies of an unknown\nquantum state and in this sense the introduced scheme in this work is superior\nto the generally used entanglement witnesses that require a number of\nexperiments and preparation of copies of quantum state.",
    "arxiv_id": "quant-ph/0608168",
    "authors": [
      "Robabeh Rahimi",
      "Akira SaiToh",
      "Mikio Nakahara",
      "Masahiro Kitagawa"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.75.032317",
    "journal_ref": "Phys. Rev. A 75, 032317 (2007)",
    "title": "Single-experiment-detectable multipartite entanglement witness for   ensemble quantum computing",
    "url": "https://arxiv.org/abs/quant-ph/0608168"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d670ce29-c842-4c74-98db-fae40fad1c58",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}