Transforming stand-alone qubits into a functional, general-purpose quantum processing unit
requires an architecture where many-body quantum entanglement can be generated and …

Encoding a qubit in logical quantum states with wave functions characterized by disjoint
support and robust energies can offer simultaneous protection against relaxation and pure …

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

This tutorial aims at giving an introductory treatment of the circuit analysis of
superconducting qubits, ie, two-level systems in superconducting circuits. It also touches …

We report superconducting fluxonium qubits with coherence times largely limited by energy
relaxation and reproducibly satisfying T 2> 100 μ s (T 2> 400 μ s in one device). Moreover …

Quantum networks are likely to have a profound impact on the way we compute and
communicate in the future. In order to wire together superconducting quantum processors …

Superconducting quantum information processing machines are predominantly based on
microwave circuits with relatively low characteristic impedance, about 100 Ω, and small …

Superconducting qubits with intrinsic noise protection offer a promising approach to improve
the coherence of quantum information. Crucial to such protected qubits is the encoding of …

Superconducting qubits seem promising for useful quantum computers, but the currently
wide-spread qubit designs and techniques do not yet provide high enough performance …

Coherence of superconducting qubits can be improved by implementing designs that protect
the parity of Cooper pairs on superconducting islands. Here, we introduce a parity-protected …