{
  "id": "1008.0794",
  "version": "v1",
  "published": "2010-08-04T14:47:18.000Z",
  "updated": "2010-08-04T14:47:18.000Z",
  "title": "Energy entanglement in neutron interferometry",
  "authors": [
    "Katharina Durstberger-Rennhofer",
    "Yuji Hasegawa"
  ],
  "comment": "4 pages, 3 figures",
  "categories": [
    "quant-ph"
  ],
  "abstract": "Entanglement between degrees of freedom, namely between the spin, path and (total) energy degrees of freedom, for single neutrons is exploited. We implemented a triply entangled Greenberger-Horne-Zeilinger(GHZ)-like state and coherently manipulated relative phases of two-level quantum subsystems. An inequality derived by Mermin was applied to analyze the generated GHZ-like state: we determined the four expectation values and finally obtained M=2.558 +/- 0.004 which is clearly above the threshold of 2. This demonstrates the violation of a Mermin-like inequality for triply entangled GHZ-like state in a single-particle system, which, in turn, exhibits a clear inconsistency between noncontextual assumptions and quantum mechanics and confirms quantum contextuality.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-08-04T14:47:18.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "neutron interferometry",
      "energy entanglement",
      "ghz-like state",
      "two-level quantum subsystems",
      "confirms quantum contextuality"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1016/j.physb.2010.11.056",
      "journal": "Physica B Condensed Matter",
      "year": 2011,
      "month": "Jun",
      "volume": 406,
      "number": 12,
      "pages": 2373
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhyB..406.2373D"
    }
  }
}