In the past 20 years, impressive progress has been made both experimentally and
theoretically in superconducting quantum circuits, which provide a platform for manipulating …

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 …

Photonic synthetic materials provide an opportunity to explore the role of microscopic
quantum phenomena in determining macroscopic material properties. There are, however …

We benchmark the decoherence of superconducting transmon qubits to examine the
temporal stability of energy relaxation, dephasing, and qubit transition frequency. By …

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 …

Superconducting circuits are macroscopic in size but have generic quantum properties such
as quantized energy levels, superposition of states, and entanglement, all of which are more …

Multipartite entanglement is one of the core concepts in quantum information science with
broad applications that span from condensed matter physics to quantum physics foundation …

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

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 …