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arXiv · 2405.09170

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

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·Peiheng Wu
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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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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, Peiheng Wu. 2024-05-15. Tunable superconducting resonators via on-chip control of local magnetic field. https://doi.org/10.1088/1674-1056/ad2f21

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