Investigating bursts of suppressed relaxation time using Quantum Inspire Starmon-5 and a 17-transmon processor

ORAL

Abstract

Following McEwen et al. [1], we investigate bursts of suppressed qubit relaxation time in two superconducting quantum processors: the publicly available Quantum Inspire Starmon-5 [2] as well as a Surface-17 processor used for quantum error correction experiments. We exploit mid-circuit measurement to detect the incidence rate. Next, we use a restless measurement technique to resolve the spatial and temporal characteristics of individual bursts. While our observations are consistent with [1] with regard to incidence rate and global impact, we find a characteristic recovery time of a few hundred microseconds, about two-three orders of magnitude faster.



[1] M. McEwen et al., Nature Physics 18, 107 (2022).

[2] quantum-inspire.com

* Research funded by Intel Corporation, IARPA (U.S. A.R.O. Grant No. W911NF-16-1-0071), and the European Flagship (OpenSuperQPlus).

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Presenters

  • Giuseppe Ruggero Di Carlo

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology

Authors

  • Giuseppe Ruggero Di Carlo

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology

  • Jorge F Marques

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft University of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, The Netherlands

  • Miguel S Moreira

    Massachusetts Institute of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology

  • Leonardo DiCarlo

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft University of Technology