中国物理B ›› 2024, Vol. 33 ›› Issue (5): 58402-058402.doi: 10.1088/1674-1056/ad2f21

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Tunable superconducting resonators via on-chip control of local magnetic field

Chen-Guang Wang(王晨光)1,2, Wen-Cheng Yue(岳文诚)1, Xuecou Tu(涂学凑)1, Tianyuan Chi(迟天圆)1, Tingting Guo(郭婷婷)1, Yang-Yang Lyu(吕阳阳)1, Sining Dong(董思宁)1,3, Chunhai Cao(曹春海)1, Labao Zhang(张蜡宝)1,4, Xiaoqing Jia(贾小氢)1,4, Guozhu Sun(孙国柱)1,4, Lin Kang(康琳)1,4, Jian Chen(陈健)1,2, Yong-Lei Wang(王永磊)1,2,3,†, Huabing Wang(王华兵)1,2,‡, and Peiheng Wu(吴培亨)1,2   

  1. 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
  • 收稿日期:2024-02-22 修回日期:2024-02-26 接受日期:2024-03-01 出版日期:2024-05-20 发布日期:2024-05-20
  • 通讯作者: Yong-Lei Wang, Huabing Wang E-mail:yongleiwang@nju.edu.cn;hbwang@nju.edu.cn
  • 基金资助:
    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.

Tunable superconducting resonators via on-chip control of local magnetic field

Chen-Guang Wang(王晨光)1,2, Wen-Cheng Yue(岳文诚)1, Xuecou Tu(涂学凑)1, Tianyuan Chi(迟天圆)1, Tingting Guo(郭婷婷)1, Yang-Yang Lyu(吕阳阳)1, Sining Dong(董思宁)1,3, Chunhai Cao(曹春海)1, Labao Zhang(张蜡宝)1,4, Xiaoqing Jia(贾小氢)1,4, Guozhu Sun(孙国柱)1,4, Lin Kang(康琳)1,4, Jian Chen(陈健)1,2, Yong-Lei Wang(王永磊)1,2,3,†, Huabing Wang(王华兵)1,2,‡, and Peiheng Wu(吴培亨)1,2   

  1. 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
  • Received:2024-02-22 Revised:2024-02-26 Accepted:2024-03-01 Online:2024-05-20 Published:2024-05-20
  • Contact: Yong-Lei Wang, Huabing Wang E-mail:yongleiwang@nju.edu.cn;hbwang@nju.edu.cn
  • Supported by:
    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.

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摘要： 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.

关键词: superconducting resonator, NbN, kinetic inductance, tunable resonator

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.

Key words: superconducting resonator, NbN, kinetic inductance, tunable resonator

中图分类号:  (Microwave circuits)

  • 84.40.Dc
85.25.Am (Superconducting device characterization, design, and modeling)