{
  "id": "1309.0934",
  "version": "v1",
  "published": "2013-09-04T07:40:01.000Z",
  "updated": "2013-09-04T07:40:01.000Z",
  "title": "The witness of sudden change of geometric quantum correlation",
  "authors": [
    "Chang-shui Yu",
    "Bo Li",
    "Heng Fan"
  ],
  "comment": "14 pages, 6 figures. To appear in Quantum Information and Computation",
  "journal": "Quantum information and computation, 14 (5&6): 0454 (2013)",
  "categories": [
    "quant-ph"
  ],
  "abstract": "In this paper, we give a sufficient and necessary condition (witness) for the sudden change of geometric quantum discord by considering mathematical definition of the discontinuity of a function. Based on the witness, we can find out various sudden changes of quan- tum correlation by considering both the Markovian and the non-Markovian cases. In particular, we can accurately find out critical points of the sudden changes even though they are not quite obvious in the graphical representation. In addition, one can also find that sudden change of quantum correlation, like the frozen quantum correlation, strongly depends on the choice of the quantum correlation measure.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-09-04T07:40:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "sudden change",
      "geometric quantum correlation",
      "geometric quantum discord",
      "frozen quantum correlation",
      "quantum correlation measure"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013arXiv1309.0934Y"
    }
  }
}