Superconducting niobium (Nb) thin films have recently attracted significant attention due to
their utility for quantum information technologies. In the processing of Nb thin films, fluoride …

We have designed a tunable nonlinear resonator terminated by a SNAIL (Superconducting
Nonlinear Asymmetric Inductive eLement). Such a device possesses a Kerr-free point in …

Microwave loss in niobium metallic structures used for superconducting quantum circuits is
limited by a native surface oxide layer formed over a timescale of minutes when exposed to …

Quantum circuits show unprecedented sensitivity to external fluctuations compared to their
classical counterparts, and it can take as little as a single atomic defect somewhere in a mm …

Superconducting coplanar waveguide (CPW) microwave resonators in quantum circuits are
the best components for reading and changing the state of artificial atoms because of their …

The performance of superconducting microwave circuits is strongly influenced by the
material properties of the superconducting film and substrate. While progress has been …

We systematically investigate the influence of the fabrication process on dielectric loss in
aluminum-on-silicon superconducting coplanar waveguide resonators with internal quality …

The coplanar waveguide (CPW) microwave resonators have been widely applied for solid-
state quantum computation and single-photon detection. Based on the physical analysis for …

Airbridges are extensively employed in superconducting quantum circuits to suppress
parasitic slotline modes in coplanar waveguide and minimize crosstalk between control …

A single crystal niobium thin film was grown using molecular beam epitaxy on a c-plane
sapphire wafer. Several samples were fabricated into dc resistivity test devices and coplanar …