{
  "id": "1407.1346",
  "version": "v1",
  "published": "2014-07-05T00:01:52.000Z",
  "updated": "2014-07-05T00:01:52.000Z",
  "title": "Flux qubits in a planar circuit quantum electrodynamics architecture: quantum control and decoherence",
  "authors": [
    "J. -L. Orgiazzi",
    "C. Deng",
    "D. Layden",
    "R. Marchildon",
    "F. Kitapli",
    "F. Shen",
    "M. Bal",
    "F. R. Ong",
    "A. Lupascu"
  ],
  "comment": "8 pages, including supplementary information",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con",
    "quant-ph"
  ],
  "abstract": "We report experiments on superconducting flux qubits in a circuit quantum electrodynamics (cQED) setup. Two qubits, independently biased and controlled, are coupled to a coplanar waveguide resonator. Dispersive qubit state readout reaches a maximum contrast of $72\\,\\%$. We find intrinsic energy relaxation times at the symmetry point of $7\\,\\mu\\text{s}$ and $20\\,\\mu\\text{s}$ and levels of flux noise of $2.6\\,\\mu \\Phi_0/\\sqrt{\\text{Hz}}$ and $2.7\\,\\mu \\Phi_0/\\sqrt{\\text{Hz}}$ at 1 Hz for the two qubits. We discuss the origin of decoherence in the measured devices. These results demonstrate the potential of cQED as a platform for fundamental investigations of decoherence and quantum dynamics of flux qubits.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-07-05T00:01:52.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "planar circuit quantum electrodynamics architecture",
      "flux qubits",
      "quantum control",
      "decoherence",
      "dispersive qubit state readout reaches"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014arXiv1407.1346O"
    }
  }
}