Advances in materials science and engineering have played a central role in the
development of classical computers and will undoubtedly be critical in propelling the …

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 aim of this review is to provide quantum engineers with an introductory guide to the
central concepts and challenges in the rapidly accelerating field of superconducting …

The scalable application of quantum information science will stand on reproducible and
controllable high-coherence quantum bits (qubits). Here, we revisit the design and …

Artificial atoms realized by superconducting circuits offer unique opportunities to store and
process quantum information with high fidelity. Among them, implementations of circuits that …

We demonstrate a planar, tunable superconducting qubit with energy relaxation times up to
44 μ s. This is achieved by using a geometry designed to both minimize radiative loss and …

The efficiency of the future devices for quantum information processing is limited mostly by
the finite decoherence rates of the individual qubits and quantum gates. Recently …

Quantum coherence in natural and artificial spin systems is fundamental to applications
ranging from quantum information science to magnetic-resonance imaging and …

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 …

Dielectric loss from two-level states is shown to be a dominant decoherence source in
superconducting quantum bits. Depending on the qubit design, dielectric loss from …