优化用于状态准备的 Qubit 控制脉冲

Annika S. Wiening, Joern Bergendahl, Vicente Leyton-Ortega, Peter Nalbach
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引用次数: 0

摘要

在方兴未艾的量子计算领域,量子脉冲的精确设计和优化对于提高量子比特的运行保真度至关重要。这项研究的重点是完善超导量子比特的脉冲工程技术,采用了对各种近似方案下的方形和高斯脉冲包络的详细分析。我们评估了天真的脉冲设计所引起的相干误差的影响。我们确定了哈密顿模型近似水平中这些误差的来源。我们通过调整外部驱动频率和脉冲配置来减轻这些误差,从而实现了减少频闪误差的脉冲方案。此外,本文开发的技术适用于不同的量子架构,如离子阱、原子和光子系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimizing Qubit Control Pulses for State Preparation
In the burgeoning field of quantum computing, the precise design and optimization of quantum pulses are essential for enhancing qubit operation fidelity. This study focuses on refining the pulse engineering techniques for superconducting qubits, employing a detailed analysis of Square and Gaussian pulse envelopes under various approximation schemes. We evaluated the effects of coherent errors induced by naive pulse designs. We identified the sources of these errors in the Hamiltonian model's approximation level. We mitigated these errors through adjustments to the external driving frequency and pulse durations, thus, implementing a pulse scheme with stroboscopic error reduction. Our results demonstrate that these refined pulse strategies improve performance and reduce coherent errors. Moreover, the techniques developed herein are applicable across different quantum architectures, such as ion-trap, atomic, and photonic systems.
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