Experimental universal gate set operation on cat qubits in a Kerr Parametric Oscillator

ORAL

Abstract

We present our experimental results on implementation of universal gate set operation on cat states encoding. These cat states are generated in two-dimensional superconducting Kerr Parametric Oscillators (KPOs). X- and Z-gates are implemented by manipulating the strength of the microwave drive and its detuning. Numerical optimization technics are applied to improve the gate fidelity, which is estimated using quantum process tomography. We also show some preliminary results of two-KPO gate operation. This work will be the first step towards realization of a universal quantum computing platform made of a nonlinear oscillator network [1].

[1] Hayato Goto, Universal quantum computation with a nonlinear oscillator network, Phys. Rev. A 93, 050301(2016)

*This work was supported by JST [Moonshot R&D][Grant NumberJPMJMS2067] and the results obtained from a project commissioned by the New Energy and Industrial Technology Development Organization (NEDO).

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Presenters

  • Takahiko Kamiya

    • Tokyo University of Science

Authors

  • Takahiko Kamiya

    • Tokyo University of Science

  • Daisuke Iyama

    • Tokyo University of Science

  • Shiori Fujii

    • Tokyo University of Science

  • Sangil Kwon

    • Tokyo University of Science

  • Shohei Watabe

    • Shibaura Institute of Technology
    • Shibaura Instituteof Technology

  • Jaw-Shen Tsai

    • Department of Physics, Tokyo University of Science
    • NEC Research Institute, Inc
    • RIKEN Center for Quantum Computing (RQC)
    • RIKEN Center forQuantumComputing (RQC)