{
  "id": "1107.4863",
  "version": "v2",
  "published": "2011-07-25T08:13:53.000Z",
  "updated": "2011-11-24T10:06:13.000Z",
  "title": "Multiparticle entanglement in graph-diagonal states: Necessary and sufficient conditions for four qubits",
  "authors": [
    "Otfried Gühne",
    "Bastian Jungnitsch",
    "Tobias Moroder",
    "Yaakov S. Weinstein"
  ],
  "comment": "11 pages, 2 figures, v2: small changes",
  "journal": "Phys. Rev. A 84, 052319 (2011)",
  "doi": "10.1103/PhysRevA.84.052319",
  "categories": [
    "quant-ph"
  ],
  "abstract": "The characterization of genuine multiparticle entanglement is important for entanglement theory as well as experimental studies related to quantum information theory. Here, we completely characterize genuine multiparticle entanglement for four-qubit states diagonal in the cluster-state basis. In addition, we give a complete characterization of multiparticle entanglement for all five-qubit graph states mixed with white noise, for states diagonal in the basis corresponding to the five-qubit Y-shaped graph, and for a family of graph states with an arbitrary number of qubits.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-11-24T10:06:13.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.67.Mn",
      "03.65.Ud"
    ],
    "keywords": [
      "graph-diagonal states",
      "sufficient conditions",
      "quantum information theory",
      "five-qubit graph states",
      "characterize genuine multiparticle entanglement"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review A",
      "year": 2011,
      "month": "Nov",
      "volume": 84,
      "number": 5,
      "pages": "052319"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvA..84e2319G"
    }
  }
}