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arXiv · 2012.00831

Simple Mitigation Strategy for a Systematic Gate Error in IBMQ

Daniel Bultrini·Max Hunter Gordon·Esperanza López·Germȧn Sierra
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Abstract

We report the observation and characterisation of a systematic error in the implementation of $U_3$ gates in the IBM quantum computers. The error appears as a consistent shift in one of the angles of the gate, whose magnitude does not correlate with IBM's cited errors calculated using Clifford randomized benchmarking. We propose a simple mitigation procedure, leading to an improvement in the observed value for the CHSH inequality, highlighting the utility of simple mitigation strategies for short-depth quantum circuits.

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Daniel Bultrini, Max Hunter Gordon, Esperanza López, Germȧn Sierra. 2020-12-01. Simple Mitigation Strategy for a Systematic Gate Error in IBMQ. https://arxiv.org/abs/2012.00831

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