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.

–

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