{
  "id": "1509.02258",
  "version": "v1",
  "published": "2015-09-08T06:25:38.000Z",
  "updated": "2015-09-08T06:25:38.000Z",
  "title": "Characterisation of an exchange-based two-qubit gate for resonant exchange qubits",
  "authors": [
    "Matthew P. Wardrop",
    "Andrew C. Doherty"
  ],
  "comment": "11 pages, 8 figures + 4 pages of supp. mat., 1 figure, comments welcome",
  "categories": [
    "cond-mat.mes-hall",
    "quant-ph"
  ],
  "abstract": "Resonant exchange qubits are a promising addition to the family of experimentally implemented encodings of single qubits using semiconductor quantum dots. We have shown previously that it ought to be straightforward to perform a CPHASE gate between two resonant exchange qubits with a single exchange pulse. This approach uses energy gaps to suppress leakage rather than conventional pulse sequences. In this paper we present analysis and simulations of our proposed two-qubit gate subject to charge and Overhauser field noise at levels observed in current experiments. Our main result is that we expect implementations of our two-qubit gate to achieve high fidelities, with errors at the percent level and gate times comparable to single-qubit operations. As such, exchange-coupled resonant exchange qubits remain an attractive approach for quantum computing.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-09-08T06:25:38.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "exchange-based two-qubit gate",
      "characterisation",
      "exchange-coupled resonant exchange qubits remain",
      "overhauser field noise",
      "achieve high fidelities"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}