4 papers
Surface Platinum Alloying for Passivation of Oxide Interfaces on Superconducting Niobium Films
Ananya Chattaraj, Conan Weiland, Bruce Ravel +10
Dielectric loss arising from two-level systems (TLS) at surfaces and interfaces remains a primary limitation to coherence in superconducting transmon qubits. Niobium (Nb), a widely…
Tantalum Damascene Coplanar Waveguide Resonators Fabricated Using 300 mm Scale Processes
Ekta Bhatia, Yingge Du, Krishna P Koirala +12
Surface oxides contribute to losses in superconducting transmon devices resulting in degraded performance. We explore the use of the damascene process to replace the sidewall nativ…
3(111) Grain Boundaries Accelerate Hydrogen Insertion into Palladium Nanostructures
K. A. U. Madhushani, H. Park, H. Zhou +5
Grain boundaries (GBs) are frequently implicated as key defect structures facilitating metal hydride formation, yet their specific role remains poorly understood due to their struc…
Symmetry-mediated quantum coherence of spins in an oxygen-deficient double perovskite
Shannon Bernier, Mekhola Sinha, Tyler J. Pearson +7
Elucidating the factors limiting quantum coherence in real materials is essential to the development of quantum technologies. Here we report a strategic approach to determine the e…