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 …

Quantum-mechanical effects at the macroscopic level were first explored in Josephson-
junction-based superconducting circuits in the 1980s. In recent decades, the emergence of …

Full manipulation of a quantum system requires controlled evolution generated by nonlinear
interactions, which is coherent when the rate of nonlinearity is large compared with the rate …

Photons with optical frequencies of a few hundred terahertz are perhaps the only way to
distribute quantum information over long distances. Superconducting qubits, which are one …

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) …

Encoding a qubit in a high-quality superconducting microwave cavity offers the opportunity
to perform the first layer of error correction in a single device but presents a challenge: how …

Storing quantum information for an extended period of time is essential for running quantum
algorithms with low errors. Currently, superconducting quantum memories have coherence …

Many proposals to scale quantum technology rely on modular or distributed designs
wherein individual quantum processors, called nodes, are linked together to form one large …

The efficient simulation of quantum systems is a primary motivating factor for develo**
controllable quantum machines. For addressing systems with underlying bosonic structure, it …

Materials imperfections in planar superconducting quantum circuits—in particular, two-level-
system (TLS) defects—contribute significantly to decoherence, ultimately limiting the …