{
  "id": "0911.1845",
  "version": "v1",
  "published": "2009-11-10T07:34:07.000Z",
  "updated": "2009-11-10T07:34:07.000Z",
  "title": "Non-Markovian effect on the quantum discord",
  "authors": [
    "Bo Wang",
    "Zhen-Yu Xu",
    "Ze-Qian Chen",
    "Mang Feng"
  ],
  "comment": "5 pages, 5 figures",
  "journal": "Phys. Rev. A 81, 014101 (2010)",
  "doi": "10.1103/PhysRevA.81.014101",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We study the non-Markovian effect on the dynamics of the quantum discord by exactly solving a model consisting of two independent qubits subject to two zero-temperature non-Markovian reservoirs, respectively. Considering the two qubits initially prepared in Bell-like or extended Werner-like states, we show that there is no occurrence of the sudden death, but only instantaneous disappearance of the quantum discord at some time points, in comparison to the entanglement sudden death in the same range of the parameters of interest. It implies that the quantum discord is more useful than the entanglement to describe quantum correlation involved in quantum systems.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-11-10T07:34:07.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.65.Yz",
      "03.67.-a",
      "03.65.Ta"
    ],
    "keywords": [
      "quantum discord",
      "non-markovian effect",
      "independent qubits subject",
      "zero-temperature non-markovian reservoirs",
      "entanglement sudden death"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review A",
      "year": 2010,
      "month": "Jan",
      "volume": 81,
      "number": 1,
      "pages": "014101"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010PhRvA..81a4101W"
    }
  }
}