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Tunable superconducting resonators via on-chip control of local magnetic field |
| Chen-Guang Wang1,2, Wen-Cheng Yue1, Xuecou Tu1, Tianyuan Chi1, Tingting Guo1, Yang-Yang Lyu1, Sining Dong1,3, Chunhai Cao1, Labao Zhang1,4, Xiaoqing Jia1,4, Guozhu Sun1,4, Lin Kang1,4, Jian Chen1,2, Yong-Lei Wang1,2,3,†, Huabing Wang1,2,‡, and Peiheng Wu1,2 |
1 Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China;
2 Purple Mountain Laboratories, Nanjing 211111, China;
3 National Key Laboratory of Spintronics, Nanjing University, Suzhou 215163, China;
4 Hefei National Laboratory, Hefei 230094, China |
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Abstract Superconducting microwave resonators play a pivotal role in superconducting quantum circuits. The ability to fine-tune their resonant frequencies provides enhanced control and flexibility. Here, we introduce a frequency-tunable superconducting coplanar waveguide resonator. By applying electrical currents through specifically designed ground wires, we achieve the generation and control of a localized magnetic field on the central line of the resonator, enabling continuous tuning of its resonant frequency. We demonstrate a frequency tuning range of 54.85 MHz in a 6.21-GHz resonator. This integrated and tunable resonator holds great potential as a dynamically tunable filter and as a key component of communication buses and memory elements in superconducting quantum computing.
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Received: 22 February 2024
Revised: 26 February 2024
Accepted manuscript online:
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PACS:
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84.40.Dc
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(Microwave circuits)
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85.25.Am
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(Superconducting device characterization, design, and modeling)
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| Fund: Project supported by the National Key Research and Development Program of China (Grant Nos. 2021YFA0718802 and 2018YFA0209002), the National Natural Science Foundation of China (Grant Nos. 62274086, 62288101, 61971464, 62101243, and 11961141002), the Excellent Young Scholar Program of Jiangsu Province, China (Grant Nos. BK20200008 and BK20200060), the Outstanding Postdoctoral Program of Jiangsu Province, China, the Fundamental Research Funds for the Central Universities, and the Fund from Jiangsu Key Laboratory of Advanced Techniques for Manipulating Electromagnetic Waves. |
Corresponding Authors:
Yong-Lei Wang,E-mail:yongleiwang@nju.edu.cn;Huabing Wang,E-mail:hbwang@nju.edu.cn
E-mail: yongleiwang@nju.edu.cn;hbwang@nju.edu.cn
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Cite this article:
Chen-Guang Wang, Wen-Cheng Yue, Xuecou Tu, Tianyuan Chi, Tingting Guo, Yang-Yang Lyu, Sining Dong, Chunhai Cao, Labao Zhang, Xiaoqing Jia, Guozhu Sun, Lin Kang, Jian Chen, Yong-Lei Wang, Huabing Wang, and Peiheng Wu Tunable superconducting resonators via on-chip control of local magnetic field 2024 Chin. Phys. B 33 058402
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