{
  "id": "1105.0744",
  "version": "v3",
  "published": "2011-05-04T07:06:42.000Z",
  "updated": "2011-11-23T12:28:08.000Z",
  "title": "Designing Robust Unitary Gates: Application to Concatenated Composite Pulse",
  "authors": [
    "Tsubasa Ichikawa",
    "Masamitsu Bando",
    "Yasushi Kondo",
    "Mikio Nakahara"
  ],
  "comment": "7 pages, 4 figures. Major revision: improved presentation in Sec. 3, references and appendix added",
  "journal": "Phys. Rev. A 84 (2011) 062311",
  "doi": "10.1103/PhysRevA.84.062311",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We propose a simple formalism to design unitary gates robust against given systematic errors. This formalism generalizes our previous observation [Y. Kondo and M. Bando, J. Phys. Soc. Jpn. 80, 054002 (2011)] that vanishing dynamical phase in some composite gates is essential to suppress amplitude errors. By employing our formalism, we naturally derive a new composite unitary gate which can be seen as a concatenation of two known composite unitary operations. The obtained unitary gate has high fidelity over a wider range of the error strengths compared to existing composite gates.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2011-11-23T12:28:08.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.67.Pp",
      "03.65.Vf",
      "82.56.Jn"
    ],
    "keywords": [
      "designing robust unitary gates",
      "concatenated composite pulse",
      "design unitary gates robust",
      "application",
      "composite gates"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review A",
      "year": 2011,
      "month": "Dec",
      "volume": 84,
      "number": 6,
      "pages": "062311"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvA..84f2311I"
    }
  }
}