Quantum Instruction Set Design for Performance

A quantum instruction set is where quantum hardware and software meet. We develop characterization and compilation techniques for non-Clifford gates to accurately evaluate its designs. Applying these techniques to our fluxonium processor, we show that replacing the iSWAP gate by its square root SQiS...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2023-02, Vol.130 (7), p.070601-070601, Article 070601
Main Authors: Huang, Cupjin, Wang, Tenghui, Wu, Feng, Ding, Dawei, Ye, Qi, Kong, Linghang, Zhang, Fang, Ni, Xiaotong, Song, Zhijun, Shi, Yaoyun, Zhao, Hui-Hai, Deng, Chunqing, Chen, Jianxin
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A quantum instruction set is where quantum hardware and software meet. We develop characterization and compilation techniques for non-Clifford gates to accurately evaluate its designs. Applying these techniques to our fluxonium processor, we show that replacing the iSWAP gate by its square root SQiSW leads to a significant performance boost at almost no cost. More precisely, on SQiSW we measure a gate fidelity of up to 99.72% and averaging at 99.31%, and realize Haar random two-qubit gates with an average fidelity of 96.38%. This is an average error reduction of 41% for the former and a 50% reduction for the latter compared to using iSWAP on the same processor.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.130.070601