{
  "id": "1302.4017",
  "version": "v2",
  "published": "2013-02-17T00:02:11.000Z",
  "updated": "2013-09-02T15:42:28.000Z",
  "title": "Long-Range Interaction of Spin-Qubits via Ferromagnets",
  "authors": [
    "Luka Trifunovic",
    "Fabio L. Pedrocchi",
    "Daniel Loss"
  ],
  "comment": "6 pages, 7 pages of appendix",
  "journal": "Phys. Rev. X 3, 041023 (2013)",
  "doi": "10.1103/PhysRevX.3.041023",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We propose a mechanism of coherent coupling between distant spin qubits interacting dipolarly with a ferromagnet. We derive an effective two-spin interaction Hamiltonian and estimate the coupling strength. We discuss the mechanisms of decoherence induced solely by the coupling to the ferromagnet and show that there is a regime where it is negligible. Finally, we present a sequence for the implementation of the entangling CNOT gate and estimate the corresponding operation time to be a few tens of nanoseconds. A particularly promising application of our proposal is to atomistic spin-qubits such as silicon-based qubits and NV-centers in diamond to which existing coupling schemes do not apply.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2013-09-02T15:42:28.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "71.70.Ej",
      "03.67.Lx",
      "73.21.-b",
      "76.60.-k"
    ],
    "keywords": [
      "long-range interaction",
      "ferromagnet",
      "effective two-spin interaction hamiltonian",
      "atomistic spin-qubits",
      "distant spin qubits interacting"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review X",
      "year": 2013,
      "month": "Oct",
      "volume": 3,
      "number": 4,
      "pages": "041023"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013PhRvX...3d1023T"
    }
  }
}