{
  "id": "1101.1376",
  "version": "v1",
  "published": "2011-01-07T08:13:35.000Z",
  "updated": "2011-01-07T08:13:35.000Z",
  "title": "Information, fidelity, and reversibility in single-qubit measurements",
  "authors": [
    "Hiroaki Terashima"
  ],
  "comment": "14 pages, 3 figures",
  "journal": "Phys.Rev. A83 (2011) 032114",
  "doi": "10.1103/PhysRevA.83.032114",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We explicitly calculate information, fidelity, and reversibility of an arbitrary single-qubit measurement on a completely unknown state. These quantities are expressed as functions of a single parameter, which is the ratio of the two singular values of the measurement operator corresponding to the obtained outcome. Thus, our results give information tradeoff relations to the fidelity and to the reversibility at the level of a single outcome rather than that of an overall outcome average.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-01-07T08:13:35.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.65.Ta",
      "03.67.-a"
    ],
    "keywords": [
      "reversibility",
      "arbitrary single-qubit measurement",
      "overall outcome average",
      "information tradeoff relations",
      "unknown state"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review A",
      "year": 2011,
      "month": "Mar",
      "volume": 83,
      "number": 3,
      "pages": "032114"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvA..83c2114T"
    }
  }
}