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Bichromatic Rabi control of semiconductor spin qubits

ORAL

Abstract

Electrically driven spin resonance constitutes an essential method for the control of spin qubits in semiconductor quantum dots. While established in small qubit systems, it remains unclear how to perform selective qubit rotations in scalable qubit architectures with shared control terminals.

Here, we experimentally demonstrate the coherent bichromatic Rabi control of hole spin qubits, as a method that may overcome this challenge. Upon applying two microwave bursts whose frequencies sum (or difference) matches the qubits resonance, we observe rapid qubit rotations with frequency of 4 MHz, which are controllable by the amplitude of both tones.

Furthermore, upon shifting the gate operation point along the quantum dots detuning axis, we obtain insights into the possible origins of this mechanism. We envision the bichromatic driving scheme as a possible strategy for spatial qubit addressability in large quantum dot arrays.

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Presenters

  • Valentin John

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands

Authors

  • Valentin John

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands

  • Francesco Borsoi

    Delft University of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands

  • Chien-An Wang

    Delft University of Technology, QuTech and Kavli Institute of Nanoscience, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands

  • Zoltán György

    Institute of Physics, Eötvös University, H-1117 Budapest, Hungary

  • Gábor Széchenyi

    Institute of Physics, Eötvös University, H-1117 Budapest, Hungary

  • Floor Van Riggelen

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands

  • William Iain L Lawrie

    Delft University of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands

  • Amir Sammak

    TNO, Qutech, QuTech and TNO, Stieltjesweg 1, 2628 CK Delft, The Netherlands, Netherlands Organisation for Applied Scientific Research (TNO), QuTech and Netherlands Organization for Applied Scientific Research (TNO), Delft, The Netherlands, TNO, QuTech, TNO, Netherlands Organization for Applied Scientific Research (TNO), QuTech and Netherlands Organisation for Applied Scientific Research (TNO), Stieltjesweg 1, 2628 CK Delft, The Netherlands, TNO/QuTech

  • Nico Hendrickx

    IBM Research, IBM Research Europe - Zurich, Delft University of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands

  • Giordano Scappucci

    QuTech and Kavli Institute of Nanoscience, TU Delft, P.O. Box 5046, 2600 GA Delft, The Netherlands, Delft University of Technology, QuTech and the Kavli Institute of Nanoscience, Delft University of Technology, TU Delft QuTech, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands

  • András Pályi

    Department of Theoretical Physics, Budapest University of Technology and Economics, Hungary, Department of Theoretical Physics, Institute of Physics, Budapest University of Technology and Economics, Muegyetem rkp. 3., H-1111 Budapest, Hungary

  • Menno Veldhorst

    Delft University of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands