AI 中文总结
研究调度误差对囚禁离子QCCD中DD的影响，利用滤波函数形式分析其性能，指出频率提高到2Hz以上会因调度误差适得其反，还引入实时DD协议并通过实验展示方法，以减少存储误差。
AI 中文摘要
我们研究了调度误差对囚禁离子量子电荷耦合器件（QCCD）中动力学解耦（DD）的影响，并开发了减少存储误差的更好策略。在QCCD架构中，量子比特传输和控制引入了随机脉冲延迟，影响了DD的效率。利用滤波函数形式，我们分析了存在调度引起的定时误差时DD的性能，表明它们增加了标准DD对低频波动的敏感性。对于囚禁离子平台中的典型存储误差，我们通过数值证明，由于调度引起的定时误差，将DD脉冲频率提高到2Hz以上通常会适得其反。此外，我们引入了一种实时DD协议，在空闲期间机会性地插入重聚焦脉冲。我们在Quantinuum H2-1上通过拉姆齐延迟型实验展示了我们的方法。
英文摘要
We examine the impact of scheduling errors on dynamical decoupling (DD) in trapped-ion quantum charge-coupled devices (QCCDs) and develop better strategies for reducing memory errors. In the QCCD architecture, qubit transport and control introduce stochastic pulse delays that impact the efficiency of DD. Using the filter-function formalism, we analyze the performance of DD in the presence of scheduling-induced timing errors, showing that they increase the sensitivity of standard DD to low-frequency fluctuations. For typical memory errors in trapped-ion platforms, we numerically demonstrate that increasing the DD pulse frequency beyond 2 Hz is generally counterproductive due to scheduling-induced timing errors. Furthermore, we introduce a real-time DD protocol that inserts refocusing pulses opportunistically during idle periods. We demonstrate our methods on Quantinuum H2-1 with Ramsey delay-type experiments.
Comments15 pages and 8 figures plus appendices
