{
  "id": "1601.05866",
  "version": "v1",
  "published": "2016-01-22T03:04:57.000Z",
  "updated": "2016-01-22T03:04:57.000Z",
  "title": "Invertible condition of quantum Fisher information matrix for a mixed qubit",
  "authors": [
    "Ping Yue",
    "Li Ge",
    "Qiang Zheng"
  ],
  "comment": "The European Physical Journal D 2016",
  "categories": [
    "quant-ph"
  ],
  "abstract": "Estimating multiparamter simultaneously as precise as possible is an important goal of quantum metrolo- gy. As a first step to this end, here we give a condition determining whether two arbitrary parameters can be estimated simultaneously for a qubit in the mixed state. An application of this condition is shown.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-01-22T03:04:57.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum fisher information matrix",
      "mixed qubit",
      "invertible condition",
      "important goal",
      "first step"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}