Markov chain Monte Carlo enhanced variational quantum algorithms
Markov chain Monte Carlo enhanced variational quantum algorithms
复制标题
马尔可夫链蒙特卡罗增强变分量子算法
DOI:
10.1088/2058-9565/aca821
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发表时间:
2022
影响因子:
6.7
通讯作者:
Yelin, Susanne F
中科院分区:
文献类型:
--
作者:
Patti, Taylor L;Shehab, Omar;Najafi, Khadijeh;Yelin, Susanne F
Variational quantum algorithms have the potential for significant impact on high-dimensional optimization, with applications in classical combinatorics, quantum chemistry, and condensed matter. Nevertheless, the optimization landscape of these algorithms is generally nonconvex, leading the algorithms to converge to local, rather than global, minima and the production of suboptimal solutions. In this work, we introduce a variational quantum algorithm that couples classical Markov chain Monte Carlo techniques with variational quantum algorithms, allowing the former to provably converge to global minima and thus assure solution quality. Due to the generality of our approach, it is suitable for a myriad of quantum minimization problems, including optimization and quantum state preparation. Specifically, we devise a Metropolis–Hastings method that is suitable for variational quantum devices and use it, in conjunction with quantum optimization, to construct quantum ensembles that converge to Gibbs states. These performance guarantees are derived from the ergodicity of our algorithm's state space and enable us to place analytic bounds on its time-complexity. We demonstrate both the effectiveness of our technique and the validity of our analysis through quantum circuit simulations for MaxCut instances, solving these problems deterministically and with perfect accuracy, as well as large-scale quantum Ising and transverse field spin models of up to 50 qubits. Our technique stands to broadly enrich the field of variational quantum algorithms, improving and guaranteeing the performance of these promising, yet often heuristic, methods.
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DOI:
10.1002/9781118445112.stat07834
发表时间:
2015-04
期刊:
Proceedings of the 38th Annual Hawaii International Conference on System Sciences
影响因子:
--
作者:
C. Robert
通讯作者:
C. Robert
影响因子:
6.4
作者:
J. Lemieux;B. Heim;D. Poulin;K. Svore;M. Troyer
通讯作者:
M. Troyer
DOI:
--
发表时间:
2006
期刊:
Algorithms and Complexity in Durham
影响因子:
--
作者:
W. Ben
通讯作者:
W. Ben
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
Anirban Narayan Chowdhury;G. Low;N. Wiebe
通讯作者:
N. Wiebe
DOI:
10.1103/physrevapplied.16.054035
发表时间:
2020-05
期刊:
ArXiv
影响因子:
--
作者:
Youle Wang;Guangxi Li;Xin Wang
通讯作者:
Youle Wang;Guangxi Li;Xin Wang