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 qubits are an attractive platform for quantum computing since they have
demonstrated high-fidelity quantum gates and extensibility to modest system sizes …

We report on long-term measurements of a highly coherent, nontunable superconducting
transmon qubit, revealing low-frequency burst noise in coherence times and qubit transition …

Noise within solid-state systems at low temperatures can typically be traced back to material
defects. In amorphous materials, these defects are broadly described by the tunneling two …

The innate complexity of solid-state physics exposes superconducting quantum circuits to
interactions with uncontrolled degrees of freedom degrading their coherence. By …

Superconducting integrated circuits have demonstrated a tremendous potential to realize
integrated quantum computing processors. However, the downside of the solid-state …

A major issue for the implementation of large-scale superconducting quantum circuits is the
interaction with interfacial two-level system (TLS) defects that lead to qubit parameter …

Superconducting cavity electro-optics presents a promising route to coherently convert
microwave and optical photons and distribute quantum entanglement between …

Accurate characterization of the noise influencing a quantum system of interest has far-
reaching implications across quantum science, ranging from microscopic modeling of …

Noise and decoherence due to spurious two-level systems located at material interfaces are
long-standing issues for solid-state quantum devices. Efforts to mitigate the effects of two …