Efficient autonomous system-wide gate calibration

An important step in the path towards full-fledged quantum computation is the ability to maintain high fidelity gates across a full device and across time. Current NISQ devices are error-prone and fragile, suffering from a wide range of errors, including dephasing, leakage and cross-talk, which may lead to low quality gates and drift in gate performance over time. In this talk we present a quantum control pipeline, based on Clifford circuits, to efficiently perform a system-wide calibration through parallel and automated-closed loop optimization of microwave pulses. Widely used methods such as randomized benchmarking tend to underestimate coherent errors, while methods that are based on process tomography require significant resources. Our method maintains high sensitivity to both coherent and non coherent errors while being machine efficient, allowing full device calibration in a matter of minutes. We show that our implemented single and two qubit gates yield fidelities near the T1 limit, and demonstrate our methods across different hardware providers and across devices, showing over 7x improvement in fidelity compared to default gates.