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arXiv · 2412.19473

Traversing Quantum Control Robustness Landscapes: A New Paradigm for Quantum Gate Engineering

Huiqi Xue·Xiu-Hao Deng
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Abstract

The optimization of robust quantum control is often tailored to specific tasks and suffers from inefficiencies due to the complexity of cost functions. Our recent findings indicate a highly effective methodology for the engineering of quantum gates by initiating the process with a robust control configuration of any arbitrary gate. We first introduce the Quantum Control Robustness Landscape (QCRL), a conceptual framework that maps control parameters to noise susceptibility. This framework facilitates a systematic investigation of equally robust controls for diverse quantum operations. By navigating through the level sets of the QCRL, our Robustness-Invariant Pulse Variation (RIPV) algorithm allows for the variation of control pulses while preserving robustness. Numerical simulations demonstrate that our single- and two-qubit gates exceed the quantum error correction threshold even with substantial noise. This methodology opens up a new paradigm for quantum gate engineering capable of effectively suppressing generic noise.

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Huiqi Xue, Xiu-Hao Deng. 2024-12-27. Traversing Quantum Control Robustness Landscapes: A New Paradigm for Quantum Gate Engineering. https://arxiv.org/abs/2412.19473

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