{
  "id": "2008.13063",
  "version": "v1",
  "published": "2020-08-29T21:52:31.000Z",
  "updated": "2020-08-29T21:52:31.000Z",
  "title": "Maximal singlet fraction vs. maximal achievable fidelity as proper entanglement measures",
  "authors": [
    "Hermann L. Albrecht Q.",
    "Douglas F. Mundarain"
  ],
  "comment": "8 pages, 8 figures",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We review some parametric families of 2-qubit states for which concurrence and maximal singlet fraction (MSF) have different and even opposite behaviour. For states considered in this work, maximal achievable fidelity (MAF), a quantity derived by Verstraete and Verschelde in 2003, shows a better agreement with concurrence and complies with important features required to be considered a good entanglement measure.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-08-29T21:52:31.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "81P40",
      "81P42",
      "81S22"
    ],
    "keywords": [
      "maximal singlet fraction",
      "maximal achievable fidelity",
      "proper entanglement measures",
      "parametric families",
      "better agreement"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}