论文标题
量子芯片设计优化和自动化超导耦合器体系结构
Quantum chip design optimization and automation in superconducting coupler architecture
论文作者
论文摘要
超导耦合器体系结构具有可扩展和高性能量子处理器的巨大潜力，但是如何从布局的角度从高性能的高性能设计高效，自动“ QUBIT-COUPLER-QUITING（QCQ）”设计了巨大的潜力。在这项工作中，首次研究了此问题，导致三个关键发现。首先，我们获得了仅取决于布局的几何设计的关键零耦合条件。其次，发现Qubit Qubit有效耦合的上限为$ 0.0822〜Ω_l/β_s^2 $，这仅取决于人为预先确定的量$ω_l，β_S$而不是特定的布局。第三，我们提出了一个最佳布局设计程序来达到上限，从而导致高效且高性能的布局设计。使用电磁仿真实验，已仔细证明了该过程的有效性。作为搅拌的应用，我们报告了最先进的3202 UM远程QCQ布局，这对于量子误差校正特别重要。我们的工作提供了实用的指南，以优化现有的耦合器体系结构的性能，找出新的布局，并进一步提高量子芯片设计自动化的进度。
Superconducting coupler architecture demonstrates great potential for scalable and high-performance quantum processors, yet how to design efficiently and automatically 'Qubit-Coupler-Qubit (QCQ)' of high performance from the layout perspective remains obscure. In this work, this issue is studied for the first time resulting in three key findings. Firstly, we acquire the crucial zero-coupling condition that is only dependent on the geometric design of the layout. Secondly, the upper bound of the qubit-qubit effective coupling is found as $0.0822~ ω_l/β_s^2$ which surprisingly depends only on the artificially pre-decided quantities $ω_l, β_s$ instead of specific layouts. Thirdly, we propose an optimal layout design procedure to reach the very upper bound, leading to efficient and high-performance layout design. The effectiveness of the procedure has been demonstrated scrupulously using electromagnetic simulation experiments. As a stirring application, we report a state-of-the-art 3202 um long-range and scalable QCQ layout that is especially crucial to quantum error correction. Our work provides practical guides to optimize the performance of the existing coupler architecture, find out novel layouts, and further advance the progress of quantum chip design automation.
