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ShanghaiTech University Knowledge Management System
All-microwave CZ gate based on fixed-frequency driven coupler | |
2025-04-01 | |
发表期刊 | CHINESE PHYSICS B (IF:1.5[JCR-2023],1.4[5-Year]) |
ISSN | 1674-1056 |
EISSN | 2058-3834 |
卷号 | 34期号:4 |
发表状态 | 已发表 |
DOI | 10.1088/1674-1056/adb68a |
摘要 | High-quality entangling gates are crucial for scalable quantum information processing. Implementing all-microwave two-qubit gates on fixed-frequency transmons offers advantages in reducing wiring complexity, but the gate performance is often limited due to the residual ZZ interaction and the frequency crowding problem. Here, we introduce a novel scheme that enables a microwave drive-activated CZ gate compatible with the coupler structure to suppress the residual ZZ interaction. The microwave drive is applied to the coupler and the microwave drive frequency remains far detuned from the system's transition frequency to alleviate the frequency crowding problem. We model the gate process analytically and demonstrate a theoretical gate fidelity up to 99.9% numerically. Our scheme is compatible with current coupler-structure-based circuits, and insensitive to microwave crosstalk, showing a possible path for all-microwave quantum operations at scale. |
关键词 | quantum computing superconducting qubit two-qubit gate 03.67.Lx |
URL | 查看原文 |
收录类别 | SCI ; EI |
语种 | 英语 |
资助项目 | Key-Area Research and Development Program of Guangdong Province, China[2020B0303030002] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0670000] ; National Key Research and Development Program of China[2023YFB4404904] |
WOS研究方向 | Physics |
WOS类目 | Physics, Multidisciplinary |
WOS记录号 | WOS:001466652200001 |
出版者 | IOP Publishing Ltd |
EI入藏号 | 20251618254947 |
EI主题词 | Qubits |
EI分类号 | 210 Adhesive Materials ; 214 Materials Science ; 714.2 Semiconductor Devices and Integrated Circuits ; 716.1 Information Theory and Signal Processing ; 741 Light, Optics and Optical Devices ; 741.1 Light/Optics ; 761 Nanotechnology ; 1301.1.4 Quantum Theory ; Quantum Mechanics ; 1301.2.1 High Energy Physics |
原始文献类型 | Journal article (JA) |
文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/520689 |
专题 | 物质科学与技术学院_博士生 |
通讯作者 | Lin, Z. R. |
作者单位 | 1.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Mat Integrated Circuits, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.ShanghaiTech Univ, Shanghai 201210, Peoples R China |
推荐引用方式 GB/T 7714 | Gao, Wanpeng,He, Xiaoliang,Niu, Zhengqi,et al. All-microwave CZ gate based on fixed-frequency driven coupler[J]. CHINESE PHYSICS B,2025,34(4). |
APA | Gao, Wanpeng.,He, Xiaoliang.,Niu, Zhengqi.,Bao, Daqiang.,Liu, Kuang.,...&Lin, Z. R..(2025).All-microwave CZ gate based on fixed-frequency driven coupler.CHINESE PHYSICS B,34(4). |
MLA | Gao, Wanpeng,et al."All-microwave CZ gate based on fixed-frequency driven coupler".CHINESE PHYSICS B 34.4(2025). |
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