Mitigation of critical current fluctuation of Josephson junctions in superconducting quantum circuits

被引：4

作者：

Song, Shuqing ^{[1
]}

Sun, Yuting ^{[1
]}

Xu, Jianwen ^{[1
]}

Han, Zhikun ^{[1
]}

Yang, Xiaopei ^{[1
]}

Wang, Xiaohan ^{[1
]}

Li, Shaoxiong ^{[1
]}

Lan, Dong ^{[1
]}

Zhao, Jie ^{[1
]}

Tan, Xinsheng ^{[1
]}

Yu, Yang ^{[1
]}

机构：

[1] Nanjing Univ, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2021年 / 118卷 / 24期

关键词：

SUPREMACY;

D O I：

10.1063/5.0049637

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In superconducting quantum circuits, Josephson junctions are a key component to provide nonlinearity and enable superconducting qubits. Fabricating junctions with precise critical currents is crucial to defining qubit frequency. Here we suppress the critical current variation of Josephson junctions by varying the critical current density J(c) and junction areas. The relative standard deviation of the critical current I-c is controlled to be below 0.8%. This uniform fabrication is promising for realizing scalable superconducting quantum computation.

引用

页数：5

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