Compact NbN resonators with high kinetic inductance

被引：0

作者：

魏兴雨 ^{[1
,2
]}

潘佳政 ^{[1
,2
]}

卢亚鹏 ^{[1
,2
]}

江俊良 ^{[1
,2
]}

李子硕 ^{[1
,2
]}

卢盛 ^{[1
,2
]}

涂学凑 ^{[1
,2
]}

赵清源 ^{[1
,2
]}

贾小氢 ^{[1
,2
]}

康琳 ^{[1
,2
]}

陈健 ^{[1
,2
]}

曹春海 ^{[1
]}

王华兵 ^{[1
,2
]}

许伟伟 ^{[1
]}

孙国柱 ^{[1
,2
]}

吴培亨 ^{[1
,2
]}

机构：

[1] Research Institute of Superconductor Electronics School of Electronic Science and Engineering Nanjing University

[2] Purple Mountain Laboratories

来源：

Chinese Physics B | 2020年 / 29卷 / 12期

基金：

中央高校基本科研业务费专项资金资助; 中国国家自然科学基金; 国家重点研发计划;

关键词：

D O I：

暂无

中图分类号：

TN751.2 [谐振];

学科分类号：

080904 ;

摘要：

We design and fabricate λ/2 coplanar waveguide NbN resonators, the thickness and length of which are only several nanometers and hundred microns, respectively. The quality factor of such compact resonators can reach up to 7.5 × 10;at single photon power level at 30 m K with the resonance frequency around 6.835 GHz. In order to tune the resonant frequency, the resonator is terminated to the ground with a dc-SQUID. By tuning the magnetic flux in the dc-SQUID, the effective inductance of the dc-SQUID is varied, which leads to the change in the resonant frequency of the resonator. The tunability range is more than 30 MHz and the quality factor is about 3 × 10;. These compact and tunable NbN resonators have potential applications in the quantum information processing, such as in the precision measurement, coupling and/or reading out the quantum states of qubits.

引用

页码：134 / 138

页数：5

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