Fast, universal scheme for calibrating microwave crosstalk in superconducting circuits

被引:2
|
作者
Yang, Xiao-Yan [1 ,2 ,3 ]
Zhang, Hai-Feng [1 ,2 ,3 ]
Du, Lei [1 ,2 ,3 ]
Tao, Hao-Ran [1 ,2 ,3 ]
Guo, Liang-Liang [1 ,2 ,3 ]
Wang, Tian-Le [1 ,2 ,3 ]
Jia, Zhi-Long [4 ]
Kong, Wei-Cheng [4 ]
Chen, Zhao-Yun [5 ]
Duan, Peng [1 ,2 ,3 ]
Guo, Guo-Ping [1 ,2 ,3 ,4 ]
机构
[1] Univ Sci & Technol China, CAS Key Lab Quantum Informat, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, CAS Ctr Excellence, Hefei 230026, Anhui, Peoples R China
[3] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum Ph, Hefei 230026, Anhui, Peoples R China
[4] Origin Quantum Comp Co Ltd, Hefei 230088, Anhui, Peoples R China
[5] Hefei Comprehens Natl Sci Ctr, Inst Artificial Intelligence, Hefei 230088, Anhui, Peoples R China
基金
中国国家自然科学基金;
关键词
QUANTUM COMPUTATIONAL ADVANTAGE;
D O I
10.1063/5.0211159
中图分类号
O59 [应用物理学];
学科分类号
摘要
A challenge in building large-scale superconducting quantum processors is the precise control and manipulation of the qubit state. However, the crosstalk between the microwave control lines impedes the parallel execution of high-fidelity digital and analog quantum operations. Here, we propose and demonstrate a universal compensation protocol for calibrating the microwave signal crosstalk. We also introduce amplified error sequences to optimize accuracy. Furthermore, we show a definitive improvement in parallel gate operations with crosstalk cancellation, demonstrating the technique's effectiveness. This work paves the way for superconducting hardware that features the automated calibration of microwave crosstalk, leading to enhanced fidelities in multiqubit circuits.
引用
收藏
页数:6
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