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arXiv:2405.09170 · Chinese Physics B

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

Chen-Guang 晨光 Wang 王, Wen-Cheng 文诚 Yue 岳, Xuecou Tu, Tianyuan Chi, Tingting 婷婷 Guo 郭, Yang-Yang Lyu, Sining Dong, Chunhai Cao, Labao Zhang, Xiaoqing Jia, Guozhu Sun, Lin Kang, Jian Chen, Yong-Lei Wang, Huabing Wang, Peiheng Wu

Published Mar 1, 2024• 2 citations
arXivHTMLPDF

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.

DOI
10.1088/1674-1056/ad2f21

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