{
  "id": "1005.2793",
  "version": "v2",
  "published": "2010-05-17T01:40:08.000Z",
  "updated": "2010-11-05T07:57:31.000Z",
  "title": "Manipulation of two spin qubits in a double quantum dot using an electric field",
  "authors": [
    "Atsuo Shitade",
    "Motohiko Ezawa",
    "Naoto Nagaosa"
  ],
  "comment": "6 pages, 5 figures",
  "journal": "Phys. Rev. B 82, 195305 (2010)",
  "doi": "10.1103/PhysRevB.82.195305",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We propose purely electric manipulation of spin qubits by means of the spin-orbit interaction (SOI) {\\it without magnetic field or magnets} in a double-quantum dot. All the unitary transformations can be constructed by the time-dependent Dzyaloshinsky-Moriya interaction between the two spins, which arises from the Rashba SOI modulated by electric field. As a few demonstrations, we study both analytically and numerically the three operations, i.e., (A) the spin initialization, (B) the two-spin rotation in the opposite directions, and (C) the two-spin rotation in the same direction. The effects of the relaxation and the feasibility of this proposal are also discussed.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2010-11-05T07:57:31.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.21.La",
      "03.67.Lx",
      "71.70.Ej"
    ],
    "keywords": [
      "double quantum dot",
      "electric field",
      "spin qubits",
      "two-spin rotation",
      "time-dependent dzyaloshinsky-moriya interaction"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2010,
      "month": "Nov",
      "volume": 82,
      "number": 19,
      "pages": 195305
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010PhRvB..82s5305S"
    }
  }
}