论文标题
分析在IBM量子计算机上插入动态解耦的策略
Analyzing Strategies for Dynamical Decoupling Insertion on IBM Quantum Computer
论文作者
论文摘要
近期量子设备会遇到误差，而去矫正误差是不可忽略的来源之一。动态脱钩（DD）是一种众所周知的技术，可保护空闲量子局部免受反谐波误差的影响。但是，插入DD序列的最佳方法仍然不清楚。在本文中，我们确定导致闲置量子的不同条件，并在这些特定条件下评估DD插入的策略。具体而言，我们将空闲量子置于串扰式的情况下，将其与其他量子位耦合，并报告两种类型的闲置量子位的DD插入策略。我们还执行Ramsey实验，以了解策略选择背后的原因。最后，我们为小型电路的DD插入提供了设计指南，并提供了大规模电路设计的见解。
Near-term quantum devices are subject to errors and decoherence error is one of the non-negligible sources. Dynamical decoupling (DD) is a well-known technique to protect idle qubits from decoherence error. However, the optimal approach to inserting DD sequences still remains unclear. In this paper, we identify different conditions that lead to idle qubits and evaluate strategies for DD insertion under these specific conditions. Specifically, we divide the idle qubit into crosstalk-idle or idle-idle qubit depending on its coupling with other qubits and report the DD insertion strategies for the two types of idle qubits. We also perform Ramsey experiment to understand the reasons behind the strategy choice. Finally, we provide design guidelines for DD insertion for small circuits and insights for large-scale circuit design.
