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physics.app-ph2022
High quality superconducting Nb co-planar resonators on sapphire substrate
S. Zhu, F. Crisa, M. Bal +10
We present measurements and simulations of superconducting Nb co-planar waveguide resonators on sapphire substrate down to millikelvin temperature range with different readout powe…
physics.app-ph2021★ 20 cited
Oxygen Vacancies in Niobium Pentoxide as a Source of Two-Level System Losses in Superconducting Niobium
Daniel Bafia, Akshay Murthy, Anna Grassellino +1
We identify a major source of quantum decoherence in three-dimensional superconducting radio-frequency (SRF) resonators and two-dimensional transmon qubits composed of oxidized nio…