{
  "id": "1209.5736",
  "version": "v2",
  "published": "2012-09-25T19:43:17.000Z",
  "updated": "2012-10-04T15:08:23.000Z",
  "title": "Quantum Metrology Assisted with Abstention",
  "authors": [
    "B. Gendra",
    "E. Ronco-Bonvehi",
    "J. Calsamiglia",
    "R. Munoz-Tapia",
    "E. Bagan"
  ],
  "comment": "Some typos corrected",
  "journal": "Phys. Rev. Lett. 110, 100501 (2013)",
  "doi": "10.1103/PhysRevLett.110.100501",
  "categories": [
    "quant-ph"
  ],
  "abstract": "The main goal of quantum metrology is to obtain accurate values of physical parameters using quantum probes. In this context, we show that abstention, i.e., the possibility of getting an inconclusive answer at readout, can drastically improve the measurement precision. We focus on phase estimation and quantify the required amount of abstention for a given precision. We also develop analytical tools to obtain the asymptotic behavior of the precision and required rate of abstention for arbitrary pure qubit states.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2012-10-04T15:08:23.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.67.-a",
      "03.65.Ta",
      "06.20.-f"
    ],
    "keywords": [
      "quantum metrology",
      "abstention",
      "arbitrary pure qubit states",
      "main goal",
      "phase estimation"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2013,
      "month": "Mar",
      "volume": 110,
      "number": 10,
      "pages": 100501
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013PhRvL.110j0501G"
    }
  }
}