Dimensionality reduction for closed-loop quantum gate calibration

• URL: http://arxiv.org/abs/2412.05230v1
• Date: Fri, 06 Dec 2024 18:00:07 GMT
• Title: Dimensionality reduction for closed-loop quantum gate calibration
• Authors: Emma Berger, Vivek Maurya, Z. M. McIntyre, Ken Xuan Wei, Holger Haas, Daniel Puzzuoli,
• Abstract summary: We present a systematic method for reducing the dimensionality of the parameter space traversed in gate calibration. We use this approach to design and calibrate an $X_pi/2$ gate robust against amplitude and detuning errors.
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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 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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