论文标题

混合量子古典DMFT的最低硬件要求

Minimum Hardware Requirements for Hybrid Quantum-Classical DMFT

论文作者

Jaderberg, Ben, Agarwal, Abhishek, Leonhardt, Karsten, Kiffner, Martin, Jaksch, Dieter

论文摘要

我们在数值上模拟嘈杂的中间尺度量子(NISQ)设备,并确定两点混合量子量子量子的动力学均值理论(DMFT)的最小硬件要求。我们开发了一种电路复位算法,该算法大大减少了DMFT算法的量子门数,并发现如果两个Qubit Gate Fidelities大于99%,则量子古典算法会收敛。融合结果与10%以内的精确解决方案一致,并且在噪声引起的误差边距中的完美一致性超过99.9%的两倍栅极储备。相比之下,没有电路重新编译的量子古典算法需要至少99.999%的两倍栅极保真度才能与精确解决方案达到完美的一致性。因此,如果与这项工作中开发的重新编译技术结合使用,我们发现可以在下一代NISQ设备上运行量子古典DMFT计算。

We numerically emulate noisy intermediate-scale quantum (NISQ) devices and determine the minimal hardware requirements for two-site hybrid quantum-classical dynamical mean-field theory (DMFT). We develop a circuit recompilation algorithm which significantly reduces the number of quantum gates of the DMFT algorithm and find that the quantum-classical algorithm converges if the two-qubit gate fidelities are larger than 99%. The converged results agree with the exact solution within 10%, and perfect agreement within noise-induced error margins can be obtained for two-qubit gate fidelities exceeding 99.9%. By comparison, the quantum-classical algorithm without circuit recompilation requires a two-qubit gate fidelity of at least 99.999% to achieve perfect agreement with the exact solution. We thus find quantum-classical DMFT calculations can be run on the next generation of NISQ devices if combined with the recompilation techniques developed in this work.

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