Utility of NISQ devices: optimizing experimental parameters for the fabrication of Au atomic junction using gate-based quantum computers

Feedback-controlled electromigration (FCE) enables precise regulation of atomic migration by carefully optimizing multiple experimental parameters. However, manually fine-tuning these parameters poses significant challenges. This study investigated the feasibility of autonomously fabricating Au atom...

Full description

Saved in:

Bibliographic Details
Published in:	Applied physics express Vol. 18; no. 4; pp. 47001 - 47006
Main Authors:	Kanezashi, Takumi, Tsukayama, Daisuke, Shirakashi, Jun-ichi, Shibuya, Tetsuo, Imai, Hiroshi
Format:	Journal Article
Language:	English
Published:	IOP Publishing 01.04.2025
Subjects:	combinatorial optimization problems feedback-controlled electromigration gate-based quantum computer variational quantum eigensolver
ISSN:	1882-0778, 1882-0786
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Feedback-controlled electromigration (FCE) enables precise regulation of atomic migration by carefully optimizing multiple experimental parameters. However, manually fine-tuning these parameters poses significant challenges. This study investigated the feasibility of autonomously fabricating Au atomic junctions through gate-based quantum computing using a noisy intermediate-scale quantum (NISQ) device, which effectively approximates solutions to combinatorial optimization problems. We compared the computational accuracy of the NISQ device against a previously reported D-Wave quantum annealer. The results indicate that the NISQ device achieved lower residual energies and produced higher-quality approximate solutions for large-scale problems than the quantum annealing system.
Bibliography:	APEX-108361.R1
ISSN:	1882-0778 1882-0786
DOI:	10.35848/1882-0786/adc5da