{
  "id": "2201.08637",
  "version": "v1",
  "published": "2022-01-21T10:52:55.000Z",
  "updated": "2022-01-21T10:52:55.000Z",
  "title": "A single hole spin with enhanced coherence in natural silicon",
  "authors": [
    "N. Piot",
    "B. Brun",
    "V. Schmitt",
    "S. Zihlmann",
    "V. P. Michal",
    "A. Apra",
    "J. C. Abadillo-Uriel",
    "X. Jehl",
    "B. Bertrand",
    "H. Niebojewski",
    "L. Hutin",
    "M. Vinet",
    "M. Urdampilleta",
    "T. Meunier",
    "Y. -M. Niquet",
    "R. Maurand",
    "S. De Franceschi"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Semiconductor spin qubits based on spin-orbit states are responsive to electric field excitation allowing for practical, fast and potentially scalable qubit control. Spin-electric susceptibility, however, renders these qubits generally vulnerable to electrical noise, which limits their coherence time. Here we report on a spin-orbit qubit consisting of a single hole electrostatically confined in a natural silicon metal-oxide-semiconductor device. By varying the magnetic field orientation, we reveal the existence of operation sweet spots where the impact of charge noise is minimized while preserving an efficient electric-dipole spin control. We correspondingly observe an extension of the Hahn-echo coherence time up to 88 $\\mu$s, exceeding by an order of magnitude the best reported values for hole-spin qubits, and approaching the state-of-the-art for electron spin qubits with synthetic spin-orbit coupling in isotopically-purified silicon. This finding largely enhances the prospects of silicon-based hole spin qubits for scalable quantum information processing.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-01-21T10:52:55.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "single hole spin",
      "enhanced coherence",
      "natural silicon metal-oxide-semiconductor device",
      "coherence time",
      "efficient electric-dipole spin control"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}