论文标题

嘈杂量子电路的基准表征方法

Benchmarking Characterization Methods for Noisy Quantum Circuits

论文作者

Dahlhauser, Megan L., Humble, Travis S.

论文摘要

表征量子计算设备中噪声的有效方法对于编程和调试电路性能至关重要。现有方法在获得的信息以及所需的量子和经典资源的数量上有所不同,通常需要更多的信息。在这里,我们为开发模型的开发模型进行了栅极组层析成像,Pauli通道噪声重建和经验直接表征的表征方法,这些模型描述了27 Quibit的超导TransMon设备上嘈杂的量子电路性能。我们通过比较噪声电路模拟的准确性与相应的实验观察结果来评估这些模型。我们发现,噪声模型与实验的一致性与表征获得的信息无关,并且基础电路强烈影响表征方法的最佳选择。经验直接表征尺度我们测试并产生了基准中最准确的特征的最佳方法。

Effective methods for characterizing the noise in quantum computing devices are essential for programming and debugging circuit performance. Existing approaches vary in the information obtained as well as the amount of quantum and classical resources required, with more information generally requiring more resources. Here we benchmark the characterization methods of gate set tomography, Pauli channel noise reconstruction, and empirical direct characterization for developing models that describe noisy quantum circuit performance on a 27-qubit superconducting transmon device. We evaluate these models by comparing the accuracy of noisy circuit simulations with the corresponding experimental observations. We find that the agreement of noise model to experiment does not correlate with the information gained by characterization and that the underlying circuit strongly influences the best choice of characterization approach. Empirical direct characterization scales best of the methods we tested and produced the most accurate characterizations across our benchmarks.

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