Local gradient optimization of leakage-suppressing entangling sequences

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2007.09019.pdf (332.58 KB)

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https://arxiv.org/abs/2007.09019

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http://hdl.handle.net/11603/19517

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2020-07-17

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journal articles preprints
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Arman A. Setser and Jason P. Kestner, Local gradient optimization of leakage-suppressing entangling sequences, https://arxiv.org/abs/2007.09019

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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.