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arXiv · 2412.05230

Dimensionality reduction for closed-loop quantum gate calibration

Emma Berger·Vivek Maurya·Z. M. McIntyre·Ken Xuan Wei·Holger Haas·Daniel Puzzuoli
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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 based on SVD stacking 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 $X_{\pi/2}$ gate robust against amplitude and detuning errors, as well as an $X_{\pi/2}$ gate robust against coherent errors due to a spectator qubit.

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Emma Berger, Vivek Maurya, Z. M. McIntyre, Ken Xuan Wei, Holger Haas, Daniel Puzzuoli. 2024-12-06. Dimensionality reduction for closed-loop quantum gate calibration. https://arxiv.org/abs/2412.05230

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