Short composite rotation robust against two common systematic errors

TL;DR

This paper introduces a new composite pulse sequence that is robust against both pulse length errors and off-resonance errors in quantum control, achieving shorter operation times than previous methods.

Contribution

A novel bi-robust composite pulse for one-qubit control that improves robustness against two systematic errors with reduced operation time.

Findings

Achieves robustness against PLE and ORE simultaneously

Shorter operation time compared to existing bi-robust CPs

Enhances precision in quantum control applications

Abstract

Systematic errors hinder precise quantum control. Pulse length errors (PLEs) and off-resonance errors (OREs) are typical systematic errors that are encountered during one-qubit control. A composite pulse (CP) can help compensate for the effects of systematic errors during quantum operation. Several CPs that are robust against either PLE or ORE have been identified. However, few attempts have been made to construct CPs that are robust against both errors (bi-robust). We develop a novel bi-robust CP for one-qubit operations by modifying a PLE robust CP, which exhibits a shorter operation time than that of previously developed bi-robust CPs.