Eliminating Surface Oxides of Superconducting Circuits with Noble Metal
Encapsulation
Eliminating Surface Oxides of Superconducting Circuits with Noble Metal
Encapsulation
The lifetime of superconducting qubits is limited by dielectric loss, and a major source of dielectric loss is the native oxide present at the surface of the superconducting metal. Specifically, tantalum-based superconducting qubits have been demonstrated with record lifetimes, but a major source of loss is the presence of two-level …