Two-Level Systems in Nucleated and Non-Nucleated Epitaxial alpha-Tantalum films
Two-Level Systems in Nucleated and Non-Nucleated Epitaxial alpha-Tantalum films
Abstract Building usefully coherent superconducting quantum processors depends on reducing losses in their constituent materials. 1 Tantalum, like niobium, has proven utility as the primary superconducting layer within highly coherent qubits. 2,3 But, unlike Nb, high temperatures are typically used to stabilize the desirable body-centered-cubic phase, α-Ta, during thin film …