Majorana qubit readout using parametric modulation of light-matter coupling

ORAL

Abstract

Logical readout of Majorana qubits is a key primitive in approaches to topological quantum computing based on Majorana zero modes. The qubit readout protocol should be fast, high fidelity and, ideally, quantum non-demolition. The readout scheme should also be scalable and involve minimal device complexity. We present a readout protocol that is promising with respect to all these desiderata. The measurement is based on parametric modulation of the light-matter coupling between a microwave resonator and a pair of overlapping Majorana wave-functions.

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Presenters

  • Arne Grimsmo

    • Centre for Engineered Quantum Systems, School of Physics, The University of Sydney
    • University of Sydney
    • School of Physics, The University of Sydney

Authors

  • Arne Grimsmo

    • Centre for Engineered Quantum Systems, School of Physics, The University of Sydney
    • University of Sydney
    • School of Physics, The University of Sydney

  • Alexandre Blais

    • Institut quantique and Departement de Physique, Universite de Sherbrooke
    • Physique, Institut Quantique
    • University of Sherbrooke
    • Institut quantique and Department de Physique, Universite de Sherbrooke
    • Physique, Universite de Sherbrooke
    • Physics, University of Sherbrooke
    • Institut quantique and Départment de Physique, Université de Sherbrooke
    • Institut Quantique and Département de Physique, Université de Sherbrooke
    • Univ of Sherbrooke
    • Institut Quantique and Département de Physique, Université de Sherbooke
    • Institut quantique and Département de Physique, Université de Sherbrooke
    • Department of Physics, University of Sherbrooke

  • Karl Petersson

    • Center for Quantum Devices, Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen
    • Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute
    • Niels Bohr Institute, Univ of Copenhagen
    • Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen