Dimensionality reduction for closed-loop quantum gate calibration
arXiv:2412.05230
Abstract
Numerical gate design typically makes use of high-dimensional parameterizations enabling sophisticated, highly expressive control pulses. Developing efficient experimental calibration methods for such gates is a long-standing challenge in quantum control, as on-device calibration requires the optimization of noisy experimental data over high-dimensional parameter spaces. To improve the efficiency of calibrations, we present a systematic method for reducing the dimensionality of the parameter space traversed in gate calibration, starting from an arbitrary high-dimensional pulse representation. We use this approach to design and calibrate an gate robust against amplitude and detuning errors, as well as an gate robust against coherent errors due to a spectator qubit.
14 pages, 7 figures