Characterization of Control in a Superconducting Qutrit Using Randomized Benchmarking

@article{Kononenko2020CharacterizationOC,
  title={Characterization of Control in a Superconducting Qutrit Using Randomized Benchmarking},
  author={M. Kononenko and Muhammet Ali Yurtalan and Shenyuan Ren and J. Shi and Sahel Ashhab and Adrian Lupascu},
  journal={arXiv: Quantum Physics},
  year={2020}
}
We present experimental results on the characterization of control fidelity for a qutrit implemented in the lowest three levels of a capacitively shunted flux-biased superconducting circuit. Using randomized benchmarking, we measure an average fidelity over the elements of the qutrit Clifford group of 99.0 $\pm$ 0.2%. In addition, for a selected subset of the Clifford group, we characterize the fidelity using quantum process tomography, and by observing the periodic behaviour of repeated gate… 

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