Fast Universal Robust Quantum Gates against Various Noises

Reducing coherent noises in large-scale quantum processors is a critical step to further advance quantum information processing. The spatiotemporal correlations of the noise, which are relatively insignificant in isolated qubits or shallow circuits, pose a great challenge for quantum error correction (QEC) and potential applications in the noisy intermediate-scale quantum (NISQ) era. In this work, we report on experimental studies of robust quantum gates using superconducting qubits, based on a recent geometric framework for analyzing and mitigating generic errors. We demonstrate robust single-qubit quantum gates that withstand a broad spectrum of (quasi-)static noise, a common source of temporal-correlated errors in various platforms, and observe a significant reduction of coherent noise in randomized benchmarking. The applications of robust gates against non-static noise and the implementation of specific robust two-qubit gates are also discussed. Our work offers a versatile robust control toolbox to enable noise-resilient quantum circuits and benefit both QEC and NISQ applications.