On-chip control signal measurements for superconducting qubits

As superconducting quantum computing circuits grow in complexity, efficiently tuning up high-fidelity gate operations will become increasingly important. Chip mounts, wire bonds, and even commercial microwave connectors cause signal path irregularities that distort control waveforms in complex ways. I will present measurements of the system transfer function, from room temperature DAC to superconducting chip, with the goal of parameterizing gate distortion. Additionally we can use this model to improve the signal path and our gate performance.