Title | Scalable Method for Eliminating Residual ZZ Interaction between Superconducting Qubits |
Author | |
Corresponding Author | Yan, Fei; Xu, Yuan |
Publication Years | 2022-07-22
|
DOI | |
Source Title | |
ISSN | 0031-9007
|
EISSN | 1079-7114
|
Volume | 129Issue: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 | |
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]:10
|
Document Type | Journal Article |
Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/375559 |
Department | Institute 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 Affilication | Institute for Quantum Science and Engineering; Department of Physics |
Corresponding Author Affilication | Institute for Quantum Science and Engineering |
First Author's First Affilication | Institute 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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