Amorphous solids show surprisingly universal behaviour at low temperatures. The
prevailing wisdom is that this can be explained by the existence of two-state defects within …

Superconducting integrated circuits incorporating Josephson junctions are an attractive
candidate for scalable quantum information processing in the solid state. The strong …

Quantum computing based on Josephson junction technology is considered promising due
to its scalable architecture. However, decoherence is a major obstacle. Here, we report …

In highly resistive superconducting tunnel junctions, excess subgap current is usually
observed and is often attributed to microscopic pinholes in the tunnel barrier. We have …

A common observation in metal-based (specifically, those with Al O x tunnel junctions)
single-electron tunneling (SET) devices is a time-dependent instability known as the long …

Superconducting circuits are exceptionally flexible, enabling many different devices from
sensors to quantum computers. Separately, epitaxial semiconductor devices such as spin …

We report microwave transmission measurements of superconducting Fabry-Perot
resonators, having a superconducting nanowire placed at a supercurrent antinode. As the …

Epitaxially grown superconductor/dielectric/superconductor trilayers have the potential to
form high-performance superconducting quantum devices and may even allow scalable …

Atomic layer deposition (ALD) provides a promising approach for deposition of ultrathin low-
defect-density tunnel barriers, and it has been implemented in a high-vacuum magnetron …

High critical current-density (10 to 420 kA∕ cm 2) superconductor-insulator-superconductor
tunnel junctions with aluminum nitride barriers have been realized using a remote nitrogen …