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arXiv 2304.08528quant-ph
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叠加量子误差缓解

Superposed Quantum Error Mitigation

Jorge Miguel-Ramiro, Zheng Shi, Luca Dellantonio, Albie Chan, Christine A. Muschik, Wolfgang Dür

AI总结:

本文提出在系统与辅助态之间以叠加方式执行幺正计算来缓解量子噪声,并通过并行应用、自适应校正实现即插即用且无需后处理的噪声缓解,证明可渐近达到单位保真度。

摘要:

克服噪声与不完美性的影响是量子计算中的一大挑战。在此,我们提出一种方法,其基础是在感兴趣的系统与某些辅助态之间以叠加方式执行所需的幺正计算。我们在数值模拟和IBM Quantum Platform上证明,当考虑任意噪声过程时,对同一操作的并行应用可带来显著的噪声缓解。我们首先设计了该方案的概然性实现,这些实现即插即用、与噪声特性无关且无需后处理。随后,我们利用自适应校正提高了成功概率(最高可达确定性)。我们对协议性能进行了分析,并证明可以渐近地实现单位保真度。我们的方法既适用于标准的基于门的计算模型,也适用于基于测量的计算模型。

英文摘要:

Overcoming the influence of noise and imperfections is a major challenge in quantum computing. Here, we present an approach based on applying a desired unitary computation in superposition between the system of interest and some auxiliary states. We demonstrate, numerically and on the IBM Quantum Platform, that parallel applications of the same operation lead to significant noise mitigation when arbitrary noise processes are considered. We first design probabilistic implementations of our scheme that are plug and play, independent of the noise characteristic and require no postprocessing. We then enhance the success probability (up to deterministic) using adaptive corrections. We provide an analysis of our protocol performance and demonstrate that unit fidelity can be achieved asymptotically. Our approaches are suitable to both standard gate-based and measurement-based computational models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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