{
  "id": "1210.8309",
  "version": "v1",
  "published": "2012-10-31T12:22:12.000Z",
  "updated": "2012-10-31T12:22:12.000Z",
  "title": "Quantum discord of Bell cat-states under amplitude damping",
  "authors": [
    "M. Daoud",
    "R. Ahl Laamara"
  ],
  "journal": "J. Phys. A: Math. Theor. 45 (2012) 325302",
  "categories": [
    "quant-ph"
  ],
  "abstract": "The evolution of pairwise quantum correlations of Bell cat-states under amplitude damping is examined using the concept of quantum discord which goes beyond entanglement. A closed expression of the quantum discord is explicitly derived. We used of the Koashi-Winter relation. A relation which facilitates the optimization process of the conditional entropy. We also discuss the temporal evolution of bipartite quantum correlations under a dephasing channel and compare the behaviors of quantum discord and entanglement whose properties are characterized through the concurrence.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-10-31T12:22:12.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum discord",
      "bell cat-states",
      "amplitude damping",
      "bipartite quantum correlations",
      "pairwise quantum correlations"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/1751-8113/45/32/325302",
      "journal": "Journal of Physics A Mathematical General",
      "year": 2012,
      "month": "Aug",
      "volume": 45,
      "number": 32,
      "pages": 325302
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2012JPhA...45F5302D"
    }
  }
}