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Open Quantum Systems Decoherence Superconducting Qubits

Engineering Nonlinear Response of Superconducting Niobium Microstrip Resonators via Aluminum Cladding

arXiv

Authors: Sangil Kwon, Yong-Chao Tang, Hamid R. Mohebbi, Olaf W. B. Benningshof, David G. Cory, Guo-Xing Miao

Year

2018

Paper ID

23189

Status

Preprint

Abstract Read

~2 min

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Abstract

In this work, we find that Al cladding on Nb microstrip resonators is an efficient way to suppress nonlinear responses induced by local Joule heating, resulting in improved microwave power handling capability. This improvement is likely due to the proximity effect between the Al and the Nb layers. The proximity effect is found to be controllable by tuning the thickness of the Al layer. We show that improving the film quality is also helpful as it enhances the microwave critical current density, but it cannot eliminate the local heating.

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In this work, we find that Al cladding on Nb microstrip resonators is an efficient way to suppress nonlinear responses induced by local Joule heating, resulting in improved...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1811.09170 [2] arXiv https://arxiv.org/abs/1811.09170 [3] Publisher https://arxiv.org/abs/1811.09170

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