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

王晨光 ¹岳文诚 ²涂学凑 ²迟天圆 ²郭婷婷 ²吕阳阳 ²董思宁 ³曹春海 ²张蜡宝 ⁴贾小氢 ⁴孙国柱 ⁴康琳 ⁴陈健 ¹王永磊 ⁵王华兵 ¹吴培亨¹

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作者信息

1. Research Institute of Superconductor Electronics,School of Electronic Science and Engineering,Nanjing University,Nanjing 210023,China;Purple Mountain Laboratories,Nanjing 211111,China
2. Research Institute of Superconductor Electronics,School of Electronic Science and Engineering,Nanjing University,Nanjing 210023,China
3. Research Institute of Superconductor Electronics,School of Electronic Science and Engineering,Nanjing University,Nanjing 210023,China;National Key Laboratory of Spintronics,Nanjing University,Suzhou 215163,China
4. Research Institute of Superconductor Electronics,School of Electronic Science and Engineering,Nanjing University,Nanjing 210023,China;Hefei National Laboratory,Hefei 230094,China
5. Research Institute of Superconductor Electronics,School of Electronic Science and Engineering,Nanjing University,Nanjing 210023,China;Purple Mountain Laboratories,Nanjing 211111,China;National Key Laboratory of Spintronics,Nanjing University,Suzhou 215163,China
折叠

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 super-conducting 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 communi-cation buses and memory elements in superconducting quantum computing.

Key words

superconducting resonator/NbN/kinetic inductance/tunable resonator

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基金项目

国家重点研发计划(2021YFA0718802)

国家重点研发计划(2018YFA0209002)

国家自然科学基金(62274086)

国家自然科学基金(62288101)

国家自然科学基金(61971464)

国家自然科学基金(62101243)

国家自然科学基金(11961141002)

Excellent Young Scholar Program of Jiangsu Province,China(BK20200008)

Excellent Young Scholar Program of Jiangsu Province,China(BK20200060)

Outstanding Postdoctoral Program of Jiangsu Province,China()

中央高校基本科研业务费专项()

Fund from Jiangsu Key Laboratory of Advanced Techniques for Manipulating Electromagnetic Waves()

出版年

2024

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

参考文献量33

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