{
  "id": "1708.07539",
  "version": "v1",
  "published": "2017-08-24T20:04:04.000Z",
  "updated": "2017-08-24T20:04:04.000Z",
  "title": "Decoherence of two coupled singlet-triplet spin qubits",
  "authors": [
    "Yang-Le Wu",
    "S. Das Sarma"
  ],
  "comment": "7 pages, 7 figures",
  "categories": [
    "cond-mat.mes-hall",
    "quant-ph"
  ],
  "abstract": "We study a pair of capacitively coupled singlet-triplet spin qubits. We characterize the two-qubit decoherence through two complementary measures, the decay time of coupled-qubit oscillations and the fidelity of entangled state preparation. We provide a quantitative map of their dependence on charge noise and field noise, and we highlight the magnetic field gradient across each singlet-triplet qubit as an effective tool to suppress decoherence due to charge noise.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-08-24T20:04:04.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "charge noise",
      "capacitively coupled singlet-triplet spin qubits",
      "magnetic field gradient",
      "singlet-triplet qubit",
      "two-qubit decoherence"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}