Dynamically corrected gates suppressing spatiotemporal error correlations as measured by randomized benchmarking
C. L. Edmunds, C. Hempel, R. J. Harris, V. Frey, Thomas M. Stace, M. J. Biercuk · Physical Review Research · 2020
This work introduces a method to measure error correlations in quantum circuits, both temporally between gates and spatially between qubits. The authors demonstrate that using appropriately tailored dynamically corrected gates can not only reduce the likelihood of errors, but also correlations between them, and can hence be used to precondition a circuit for quantum error correction.