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DD门序列存在的情况下演化。观察到在并发CNOT操作存在时，空闲量子比特q[0]的保真度明显下降，空闲错误在串扰的存在下被显著放大，使得量子程序极易受到这些错误的影响。同时，即使在正在进行的操作中存在串扰，DD也是有效的。",{"type":18,"tag":26,"props":440,"children":441},{},[442],{"type":18,"tag":39,"props":443,"children":445},{"alt":7,"src":444},"https://obs-mindspore-file.obs.cn-north-4.myhuaweicloud.com/file/2024/12/27/28b0fb32935c49bb841343a6a2dd5c94.png",[],{"type":18,"tag":26,"props":447,"children":448},{},[449],{"type":24,"value":450},"图13显示了相对于基线的All-DD、ADAPT和Runtime-Best策略的保真度。每个基准标签下面的数字指定了应用程序的基线保真度。量子傅立叶变换电路的结构导致量子比特在相当长的时间内保持空闲状态。例如，在QFT-6B中，Qubit-0在整个执行所花费的总时间中有90%是空闲的。虽然长序列的DD门增加了大量的单量子比特门误差，但它仍然有效地提高了整体保真度。总的来说，ADAPT优于基线。与All-DD相比，由于仿真技术限制，ADAPT未能一直优于All-DD。综上，ADAPT是一种通用技术，用于识别在运行时最容易出现空闲错误的量子比特，并且与DD协议无关。",{"type":18,"tag":26,"props":452,"children":453},{},[454],{"type":18,"tag":39,"props":455,"children":457},{"alt":7,"src":456},"https://obs-mindspore-file.obs.cn-north-4.myhuaweicloud.com/file/2024/12/27/e3a8687940314c148004ff8c0d54d887.png",[],{"type":18,"tag":26,"props":459,"children":460},{},[461],{"type":18,"tag":47,"props":462,"children":463},{},[464],{"type":24,"value":465},"项目总结",{"type":18,"tag":26,"props":467,"children":468},{},[469],{"type":24,"value":470},"先前的工作已经通过在量子比特闲置时应用一系列动态解耦（DD）门来减少闲置错误。虽然 DD 在小规模上已被证明是有效的，但其在应用层面的适用性尚未得到充分研究。我们发现，对程序中的所有量子比特应用 DD 是次优的，甚至在某些特定情况下可能会降低应用的保真度，因为 DD 是通过引入额外的量子门来实现的。如果这些额外操作的集体错误率超过了闲置错误率，DD 可能会对应用层面的总体保真度产生不利影响。因此，为了减少应用层面的闲置错误影响，应该灵活地应用动态解耦。自适应动态解耦使用诱饵电路和局部搜索算法，通过试错搜索来识别应用 DD 的最佳量子比特子集。",{"title":7,"searchDepth":472,"depth":472,"links":473},4,[474],{"id":7,"depth":475,"text":7},2,"markdown","content:technology-blogs:zh:3554.md","content","technology-blogs/zh/3554.md","technology-blogs/zh/3554","md",1776506130889]