Niobium-buffered tantalum for a superconducting fluxonium qubit

We use a magnetron sputtering system to grow a tantalum film on a sapphire substrate with a niobium buffer layer at room temperature. The tantalum film is in α -phase, which is preferred for superconducting quantum devices. We fabricate a superconducting heavy fluxonium qubit with this niobium-buffe...

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Bibliographic Details
Main Authors: Zi shuo Li, Ting ting Guo, Wen qu Xu, Li li Shi, Kai xuan Zhang, Quan Zuo, Tian shi Zhou, Guo zhu Sun, Pei heng Wu
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:Materials Research Express
Subjects:
Online Access:https://doi.org/10.1088/2053-1591/adb091