Local gradient optimization of leakage-suppressing entangling sequences
arXiv:2007.09019 · doi:10.1103/PhysRevA.103.012609
Abstract
We use a gradient-based optimization scheme to find single-qubit rotations to be interwoven between timesteps of a noisy logical two-qubit entangling gate in order to suppress arbitrary logical and leakage errors in the two-qubit gate. We show how the sequence fidelity is affected by imperfections in the single-qubit operations, as well as by various relative strengths of the logical and leakage noise. Our approach is completely general and system-independent, allowing for application to any two-qubit system regardless of the experimental implementation details.
arXiv comment6 pages, 4 figures
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