中文版 | English
Title

Scalable Method for Eliminating Residual ZZ Interaction between Superconducting Qubits

Author
Corresponding AuthorYan, Fei; Xu, Yuan
Publication Years
2022-07-22
DOI
Source Title
ISSN
0031-9007
EISSN
1079-7114
Volume129Issue:4
Abstract

Unwanted ZZ interaction is a quantum-mechanical crosstalk phenomenon which correlates qubit dynamics and is ubiquitous in superconducting qubit systems. It adversely affects the quality of quantum operations and can be detrimental in scalable quantum information processing. Here we propose and experimentally demonstrate a practically extensible approach for complete cancellation of residual ZZ interaction between fixed-frequency transmon qubits, which are known for long coherence and simple control. We apply to the intermediate coupler that connects the qubits a weak microwave drive at a properly chosen frequency in order to noninvasively induce an ac Stark shift for ZZ cancellation. We verify the cancellation performance by measuring vanishing two-qubit entangling phases and ZZ correlations. In addition, we implement a randomized benchmarking experiment to extract the idling gate fidelity which shows good agreement with the coherence limit, demonstrating the effectiveness of ZZ cancellation. Our method allows independent addressability of each qubit-qubit connection and is applicable to both nontunable and tunable couplers, promising better compatibility with future large-scale quantum processors.

URL[Source Record]
Indexed By
SCI ; EI
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
First ; Corresponding
Funding Project
Key-Area Research and Development Program of Guangdong Province[2018B030326001] ; Shenzhen Science and Technology Program[RCYX2021070 6092103021] ; Guangdong Basic and Applied Basic Research Foundation[2022A1515010324] ; National Natural Science Foundation of China[11904158] ; Guangdong Provincial Key Laboratory[2019B121203002] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06D348] ; Science, Technology and Innovation Commission of Shenzhen Municipality[
WOS Research Area
Physics
WOS Subject
Physics, Multidisciplinary
WOS Accession No
WOS:000834339100001
Publisher
EI Accession Number
20223312565044
EI Keywords
Quantum Optics ; Scalability
ESI Classification Code
Light, Optics And Optical Devices:741 ; Light/Optics:741.1 ; Nanotechnology:761 ; Quantum Theory ; Quantum Mechanics:931.4 ; Systems Science:961
ESI Research Field
PHYSICS
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:11
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/375559
DepartmentInstitute for Quantum Science and Engineering
理学院_物理系
Affiliation
1.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
2.Int Quantum Acad, Shenzhen 518048, Peoples R China
3.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Guangdong Prov Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China
First Author AffilicationInstitute for Quantum Science and Engineering;  Department of Physics
Corresponding Author AffilicationInstitute for Quantum Science and Engineering
First Author's First AffilicationInstitute for Quantum Science and Engineering
Recommended Citation
GB/T 7714
Ni, Zhongchu,Li, Sai,Zhang, Libo,et al. Scalable Method for Eliminating Residual ZZ Interaction between Superconducting Qubits[J]. PHYSICAL REVIEW LETTERS,2022,129(4).
APA
Ni, Zhongchu.,Li, Sai.,Zhang, Libo.,Chu, Ji.,Niu, Jingjing.,...&Yu, Dapeng.(2022).Scalable Method for Eliminating Residual ZZ Interaction between Superconducting Qubits.PHYSICAL REVIEW LETTERS,129(4).
MLA
Ni, Zhongchu,et al."Scalable Method for Eliminating Residual ZZ Interaction between Superconducting Qubits".PHYSICAL REVIEW LETTERS 129.4(2022).
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File Name/Size DocType Version Access License
ZhongchuNi_zz_intera(750KB) Restricted Access--
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