{
  "id": "1410.5641",
  "version": "v1",
  "published": "2014-10-21T12:53:58.000Z",
  "updated": "2014-10-21T12:53:58.000Z",
  "title": "The NV center as a quantum actuator: time-optimal control of nuclear spins",
  "authors": [
    "Clarice D. Aiello",
    "Paola Cappellaro"
  ],
  "categories": [
    "quant-ph"
  ],
  "abstract": "Indirect control of qubits by a quantum actuator has been proposed as an appealing strategy to manipulate qubits that couple only weakly to external fields. While universal quantum control can be easily achieved when the actuator-qubit coupling is anisotropic, the efficiency of this approach is less clear. Here we analyze the time-efficiency of the quantum actuator control. We describe a strategy to find time-optimal control sequence by the quantum actuator and compare their gate times with direct driving, identifying regimes where the actuator control performs faster. As an example, we focus on a specific implementation based on the Nitrogen-Vacancy center electronic spin in diamond (the actuator) and nearby carbon-13 nuclear spins (the qubits).",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-10-21T12:53:58.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.67.Lx",
      "03.65.Vf",
      "06.30.Gv",
      "61.72.jn"
    ],
    "keywords": [
      "nuclear spins",
      "nv center",
      "nitrogen-vacancy center electronic spin",
      "actuator control performs faster",
      "universal quantum control"
    ],
    "publication": {
      "doi": "10.1103/PhysRevA.91.042340",
      "journal": "Physical Review A",
      "year": 2015,
      "month": "Apr",
      "volume": 91,
      "number": 4,
      "pages": "042340"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015PhRvA..91d2340A"
    }
  }
}