245 citations · 1.7k across the 70 of their papers we have counts for
4 papers · 1 filter
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…
Internal Friction Measures to Study Precipitates Formation in EP and N-Doped Bulk Nb for SRF Applications
Tiziana Spina, Anna Grassellino, Alexander Romanenko
Main focus of this study is the investigation of thermodynamics phenomena responsible for the High Field Q Slope (HFQS) in SRF cavities by Internal Friction (IF) measurement. Mecha…
TOF-SIMS Analysis of Decoherence Sources in Nb Superconducting Resonators
Akshay A. Murthy, Jae-Yel Lee, Cameron Kopas +6
Superconducting qubits have emerged as a potentially foundational platform technology for addressing complex computational problems deemed intractable with classical computing. Des…
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…