{
  "id": "0805.1468",
  "version": "v2",
  "published": "2008-05-12T00:34:38.000Z",
  "updated": "2008-05-23T22:33:23.000Z",
  "title": "Greenberger-Horne-Zeilinger-type violation of local realism by mixed states",
  "authors": [
    "X. -Q. Zhou",
    "C. -Y. Lu",
    "W. -B. Gao",
    "J. Zhang",
    "Z. -B. Chen",
    "T. Yang",
    "J. -W. Pan"
  ],
  "comment": "four pages, five figures, revTex",
  "journal": "Phys. Rev. A 78, 012112 (2008)",
  "doi": "10.1103/PhysRevA.78.012112",
  "categories": [
    "quant-ph"
  ],
  "abstract": "Cluster states are multi-particle entangled states with special entanglement properties particularly suitable for quantum computation. It has been shown that cluster states can exhibit Greenberger-Horne-Zeilinger (GHZ)-type non-locality even when some of their qubits have been lost. In the present work, we generated a four-photon mixed state, which is equivalent to the partial, qubit-loss state of an N-qubit cluster state up to some local transformations. By using this mixed state, we then realize a GHZ-type violation of local realism. Our results not only demonstrate a mixed state's GHZ-type non-locality but also exhibit the robustness of cluster states under qubit-loss conditions.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-05-23T22:33:23.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.65.Ud",
      "03.67.Mn",
      "42.50.Dv",
      "42.50.Xa"
    ],
    "keywords": [
      "local realism",
      "greenberger-horne-zeilinger-type violation",
      "entanglement properties particularly suitable",
      "mixed states ghz-type non-locality",
      "special entanglement properties"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review A",
      "year": 2008,
      "month": "Jul",
      "volume": 78,
      "number": 1,
      "pages": "012112"
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008PhRvA..78a2112Z"
    }
  }
}