基于量子设备的鲁棒幅度估计实验演示：面向化学应用
摘要
This study explores hardware implementation of Robust Amplitude Estimation (RAE) on IBM quantum devices, demonstrating its application in quantum chemistry for one- and two-qubit Hamiltonian systems. Known for potentially offering quadratic speedups over traditional methods in estimating expectation values, RAE is evaluated under realistic noisy conditions. Our experiments provide detailed insights into the practical challenges associated with RAE. We achieved a significant reduction in sampling requirements compared to direct measurement techniques. In estimating the ground state energy of the hydrogen molecule, the RAE implementation demonstrated two orders of magnitude better accuracy for the two-qubit experiments and achieved chemical accuracy. These findings reveal its potential to enhance computational efficiencies in quantum chemistry applications despite the inherent limitations posed by hardware noise. We also found that its performance can be adversely impacted by coherent error and device stability and does not always correlate with the average gate error. These results underscore the importance of adapting quantum computational methods to hardware specifics to realize their full potential in practical scenarios.
引用
@article{arxiv.2410.00688,
title = {Supercomputer 3D Digital Twin for User Focused Real-Time Monitoring},
author = {William Bergeron and Matthew Hubbell and Daniel Mojica and Albert Reuther and William Arcand and David Bestor and Daniel Burrill and Chansup and Byun and Vijay Gadepally and Michael Houle and Hayden Jananthan and Michael Jones and Piotr Luszczek and Peter Michaleas and Lauren Milechin and Julie Mullen Andrew Prout and Antonio Rosa and Charles Yee and Jeremy Kepner},
journal= {arXiv preprint arXiv:2410.00688},
year = {2024}
}