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A germanium hole spin qubit

Author

Listed:
  • Hannes Watzinger

    (Institute of Science and Technology Austria)

  • Josip Kukučka

    (Institute of Science and Technology Austria)

  • Lada Vukušić

    (Institute of Science and Technology Austria)

  • Fei Gao

    (National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences)

  • Ting Wang

    (National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences)

  • Friedrich Schäffler

    (Johannes Kepler University, Institute of Semiconductor and Solid State Physics)

  • Jian-Jun Zhang

    (National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
    CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences)

  • Georgios Katsaros

    (Institute of Science and Technology Austria)

Abstract

Holes confined in quantum dots have gained considerable interest in the past few years due to their potential as spin qubits. Here we demonstrate two-axis control of a spin 3/2 qubit in natural Ge. The qubit is formed in a hut wire double quantum dot device. The Pauli spin blockade principle allowed us to demonstrate electric dipole spin resonance by applying a radio frequency electric field to one of the electrodes defining the double quantum dot. Coherent hole spin oscillations with Rabi frequencies reaching 140 MHz are demonstrated and dephasing times of 130 ns are measured. The reported results emphasize the potential of Ge as a platform for fast and electrically tunable hole spin qubit devices.

Suggested Citation

  • Hannes Watzinger & Josip Kukučka & Lada Vukušić & Fei Gao & Ting Wang & Friedrich Schäffler & Jian-Jun Zhang & Georgios Katsaros, 2018. "A germanium hole spin qubit," Nature Communications, Nature, vol. 9(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06418-4
    DOI: 10.1038/s41467-018-06418-4
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    Cited by:

    1. W. I. L. Lawrie & M. Rimbach-Russ & F. van Riggelen & N. W. Hendrickx & S. L. de Snoo & A. Sammak & G. Scappucci & J. Helsen & M. Veldhorst, 2023. "Simultaneous single-qubit driving of semiconductor spin qubits at the fault-tolerant threshold," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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