Variational quantum eigensolvers with quantum Gaussian filters for solving ground-state problems in quantum many-body systems

被引：0

作者：

Liu, Yihao ^{[1
,2
,3
]}

He, Min-Quan ^{[1
,2
,3
,4
]}

Wang, Z. D. ^{[1
,2
,3
,5
]}

机构：

[1] Univ Hong Kong, Dept Phys, Guangdong Hong Kong Joint Lab Quantum Matter, Pokfulam Rd, Hong Kong, Peoples R China

[2] Univ Hong Kong, HK Inst Quantum Sci & Technol, Pokfulam Rd, Hong Kong, Peoples R China

[3] Quantum Sci Ctr Guangdong Hong Kong Macau Greater, Hong Kong Branch, Shenzhen, Peoples R China

[4] Univ Hong Kong, Room 525,Chong Yuet Ming Phys Bldg,Pokfulam Rd, Hong Kong, Peoples R China

[5] Univ Hong Kong, Room 528,Chong Yuet Ming Phys Bldg,Pokfulam Rd, Hong Kong, Peoples R China

来源：

PHYSICS LETTERS A | 2025年 / 555卷

关键词：

Quantum simulation; Quantum algorithms; Variational quantum eigensolver; Quantum many-body problem; ALGORITHM;

D O I：

10.1016/j.physleta.2025.130766

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a novel quantum algorithm for approximating the ground-state in quantum many-body systems, particularly suited for Noisy Intermediate-Scale Quantum (NISQ) devices. Our approach integrates Variational Quantum Eigensolvers (VQE) with Quantum Gaussian Filters (QGF), utilizing an iterative methodology that discretizes the application of the QGF operator into small optimized steps through VQE. Demonstrated on the Transverse Field Ising models, our method shows improved convergence speed and accuracy, particularly under noisy conditions, compared to conventional VQE methods. This advancement highlights the potential of our algorithm in effectively addressing complex quantum simulations, marking a significant stride in quantum computing applications within the NISQ era.

引用

页数：8

共 53 条

[1] Quantum algorithm providing exponential speed increase for finding eigenvalues and eigenvectors [J].