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arXiv 1909.04786quant-ph
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在近场量子器件上探测多体量子态的噪声鲁棒性

Noise-robust exploration of many-body quantum states on near-term quantum devices

Johannes Borregaard, Matthias Christandl, Daniel Stilck França

备注：
20 pages, 5 figures, 1 Table. Close to published version
发表信息：
Borregaard, J., Christandl, M. & Stilck França, D. Noise-robust exploration of many-body quantum states on near-term quantum devices. npj Quantum Inf 7, 45 (2021)
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摘要：

我们描述了一种资源有效的方法来研究多体量子态的噪声，中等规模的量子设备。我们采用了一个连续的生成模型，使我们能够约束的范围内产生的多体量子态的相关性。从这一点上，我们的特点的情况下，估计当地的可观的不需要整个国家的准备。相反，可以生成更小的状态补丁，从中可以估计可观测量。这可以潜在地减少用于计算状态的物理性质的电路大小和量子比特的数量。此外，我们表明，噪声的影响减少沿计算。我们的研究结果适用于广泛的一类广泛研究的张量网络状态，并可以直接应用于短期实现的变分量子算法。

英文摘要：

We describe a resource-efficient approach to studying many-body quantum states on noisy, intermediate-scale quantum devices. We employ a sequential generation model that allows us to bound the range of correlations in the resulting many-body quantum states. From this, we characterize situations where the estimation of local observables does not require the preparation of the entire state. Instead smaller patches of the state can be generated from which the observables can be estimated. This can potentially reduce circuit size and number of qubits for the computation of physical properties of the states. Moreover, we show that the effect of noise decreases along the computation. Our results apply to a broad class of widely studied tensor network states and can be directly applied to near-term implementations of variational quantum algorithms.

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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