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arXiv 2104.01119quant-ph
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隐藏逆:电路级的相干误差消除

Hidden Inverses: Coherent Error Cancellation at the Circuit Level

Bichen Zhang, Swarnadeep Majumder, Pak Hong Leung, Stephen Crain, Ye Wang, Chao Fang, Dripto M. Debroy, Jungsang Kim, Kenneth R. Brown

摘要:

相干门误差是许多提出的量子计算架构中的关注点。这些错误可以通过用于单量子位门的复合脉冲序列来有效地处理,然而,这种技术对于纠缠操作不太可行。在这项工作中,我们通过比较复合单量子比特门的实际性能与基于单个单量子比特旋转表征的预测性能来基准测试我们的相干误差。然后,我们提出了一种编译技术,我们称之为隐藏的逆,创建电路鲁棒这些相干错误。我们目前的实验数据表明,这些电路抑制过度旋转和相位失调的错误,在我们的捕获离子系统。

英文摘要:

Coherent gate errors are a concern in many proposed quantum computing architectures. These errors can be effectively handled through composite pulse sequences for single-qubit gates, however, such techniques are less feasible for entangling operations. In this work, we benchmark our coherent errors by comparing the actual performance of composite single-qubit gates to the predicted performance based on characterization of individual single-qubit rotations. We then propose a compilation technique, which we refer to as hidden inverses, that creates circuits robust to these coherent errors. We present experimental data showing that these circuits suppress both overrotation and phase misalignment errors in our trapped ion system.

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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