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 …

The performance of superconducting circuits for quantum computing is limited by materials
losses. In particular, coherence times are typically bounded by two-level system (TLS) …

Superconducting qubits are electronic circuits comprising lithographically defined
Josephson tunnel junctions, inductors, capacitors, and interconnects. When cooled to …

We demonstrate that a high kinetic inductance disordered-superconductor nanowire can
realize a circuit element–known as a superinductor–with a characteristic impedance greater …

Superconducting coplanar waveguide (SCPW) resonators have a wide range of
applications due to the combination of their planar geometry and high quality factors relative …

The performance of a great variety of electronic devices—ranging from semiconductor
transistors to superconducting qubits—is hampered by low-frequency noise with spectra …

In the development of microwave-to-optical (MO) quantum transducers, suppressing added
noise induced by the optical excitation remains a major challenge. Here we report an …

High quality factor, ie low loss, microwave resonators are important for quantum information
storage and addressing. In this work we study the resonance frequency and loss in …

Nanomechanical oscillators offer numerous advantages for quantum technologies. Their
integration with superconducting qubits shows promise for hardware-efficient quantum error …

Thin films of TiN were sputter-deposited onto Si and sapphire wafers with and without SiN
buffer layers. The films were fabricated into rf coplanar waveguide resonators, and internal …