AI 中文总结
该研究提出基于Magnus的误差生成器级压缩控制原理，用三参数脉冲实现快速Transmon门的误差大幅抑制，性能优于一阶DRAG，且敏感度更低。
AI 中文摘要
多能级系统中的快速量子门需要用易于实现的脉冲抑制大量相干误差通道。我们提出基于Magnus的误差生成器级压缩控制原理，该原理在选定的微扰阶下最小化完整的投影误差生成器，同时将实现的波形限制为几个独立可调的系数。该构造保留所有建模的计算误差和漏误差，而非按误差通道截断脉冲，且其生成器级目标直接惩罚可表明偏离微扰 regime 的剩余本征相位。针对快速Transmon门，三参数脉冲可将误差抑制数个数量级，在研究的门时间范围内优于网格优化的一阶DRAG，且接近全参数化的17参数Magnus校正。该压缩脉冲对此处考虑的有限带宽滤波模型的敏感度也显著更低。
英文摘要
Fast quantum gates in multilevel systems require suppressing many coherent-error channels using pulses that remain simple to implement. We introduce error-generator-level compression, a Magnus-based control principle that minimizes the complete projected error generator at a chosen perturbative order while restricting the implemented waveform to a few independently adjustable coefficients. This construction preserves all modeled computational and leakage errors rather than truncating the pulse by error channel, while its generator-level objective directly penalizes residual eigenphases that can signal departure from the perturbative regime. For fast transmon gates, a three-parameter pulse suppresses errors by orders of magnitude, outperforms grid-optimized leading- order DRAG over the gate-time range studied, and approaches a fully parameterized 17-parameter Magnus correction. The compressed pulse is also substantially less sensitive to the illustrative finite-bandwidth filtering model considered here.
Comments19 pages, 4 figures
