.png){kind=icon}
.png){kind=icon}
Return
Circuit-Efficient Qubit Excitation-Based Variational Quantum Eigensolver
.png){kind=icon}
OA
AI
DOI：10.1021/acs.jctc.5c00119.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
The adaptive derivative-assembled pseudo-trotter (ADAPT) variational quantum eigensolver (VQE) is an appealing framework for iteratively constructing accurate representations of ground- and excited-state wave functions as products of exponentialized one- and two-body operators acting on a reference state. In this work, we propose a CNOT-efficient circuit for implementing exponentialized two-body qubit-excitation-based (QEB) operators, enabling the construction of the low-depth wave function Ansatze. Our proposed circuit architecture employs a 2-qubit-controlled rotation gate flanked by two layers of CNOT gates, requiring only 9 CNOT gates per two-body QEB operator while preserving essential symmetries, including particle number and the Z-component of spin. By integrating these optimized circuits into the ADAPT-VQE framework, we achieve a reduction in circuit depth of approximately 28% compared to the original QEB ADAPT-VQE method, without sacrificing accuracy in simulating ground- and excited-state properties of small molecules. Numerical simulations validate the improved performance of our approach, demonstrating its potential as an efficient tool for quantum simulations of electronic structures.
Keywords:
COMPUTATION
Journal
IF:
5.5
Papers:
1.1W
Citations:
5.4W
Organization
No organization information available