4.6 Article

Investigating microwave loss of SiGe using superconducting transmon qubits

期刊

APPLIED PHYSICS LETTERS
卷 118, 期 12, 页码 -

出版社

AMER INST PHYSICS
DOI: 10.1063/5.0038087

关键词

-

资金

  1. LPS/ARO under CQTS program [W911NF-18-1-0022]

向作者/读者索取更多资源

Silicon-germanium (SiGe) is a versatile material with applications in superconducting quantum computing. By fabricating transmon quantum bits on SiGe layers and studying microwave loss properties at cryogenic temperatures, we achieved high quality factor Q values, confirming compatibility with state-of-the-art superconducting quantum circuits.
Silicon-germanium (SiGe) is a material that possesses a multitude of applications ranging from transistors to electro-optical modulators and quantum dots. The diverse properties of SiGe also make it attractive to implementations involving superconducting quantum computing. Here, we demonstrate the fabrication of transmon quantum bits on SiGe layers and investigate the microwave loss properties of SiGe at cryogenic temperatures and single photon microwave powers. We find relaxation times of up to 100 mu s, corresponding to a quality factor Q above 4 M for large pad transmons. The high Q values obtained indicate that the SiGe/Si heterostructure is compatible with state-of-the-art performance of superconducting quantum circuits.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据