Experimental approaches to improve the single shot measurement fidelity of a superconducting charge qubit

ORAL

Abstract

We discuss various experimental approaches to improve the single shot measurement fidelity of a superconducting charge qubit. Dispersive readout is optimized on a transmon coupled to a superconducting coplanar waveguide resonator. Measurement parameters, such as microwave power and frequency are varied. Also control theory is adapted to construct a genetic algorithm which optimizes the shape of the drive pulse. Additionally, we attempt to reduce noise and increase SNR by employing a SLUG amplifier. Using these techniques, we discuss the feasibility of reaching the measurement fidelity needed for scalable quantum computation with superconducting circuits.

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Authors

  • Yanbing Liu

    • Department of Electrical Engineering, Princeton University, Princeton, NJ 08544
    • Princeton University

  • Srikanth Srinivasan

    • Department of Electrical Engineering, Princeton University, Princeton, NJ 08544
    • Princeton University

  • Anthony Hoffman

    • Princeton University

  • Andrew Houck

    • Department of Electrical Engineering, Princeton University, Princeton, NJ 08544
    • Department of Electrical Engineering, Princeton University
    • Princeton University