{
  "id": "1706.07941",
  "version": "v1",
  "published": "2017-06-24T11:26:27.000Z",
  "updated": "2017-06-24T11:26:27.000Z",
  "title": "A new coherence measure based on fidelity",
  "authors": [
    "C. L. Liu",
    "Da-Jian Zhang",
    "Xiao-Dong Yu",
    "Qi-Ming Ding",
    "Longjiang Liu"
  ],
  "comment": "10 pages Accepted by Quantum Information Processing",
  "categories": [
    "quant-ph"
  ],
  "abstract": "Quantifying coherence is an essential endeavor for both quantum foundations and quantum technologies. In this paper, we put forward a quantitative measure of coherence by following the axiomatic definition of coherence measures introduced in [T. Baumgratz, M. Cramer, and M. B. Plenio, Phys. Rev. Lett. 113, 140401 (2014)]. Our measure is based on fidelity and analytically computable for arbitrary states of a qubit. As one of its applications, we show that our measure can be used to examine whether a pure qubit state can be transformed into another pure or mixed qubit state only by incoherent operations.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-06-24T11:26:27.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "coherence measure",
      "pure qubit state",
      "incoherent operations",
      "essential endeavor",
      "quantum foundations"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}