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

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 …

Improving control over physical qubits is a crucial component of quantum computing
research. Here we report a superconducting fluxonium qubit with uncorrected coherence …

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 …

A quantum system interacts with its environment—if ever so slightly—no matter how much
care is put into isolating it. Therefore, quantum bits undergo errors, putting dauntingly difficult …

This perspective describes the history, scientific and technology developments of
superconducting qubit-based quantum computers, which are currently dominant, particularly …

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 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 …

Many important phenomena in quantum devices are dynamic, meaning that they cannot be
studied using time-averaged measurements alone. Experiments that measure such transient …

Transmon qubits are ubiquitously used in superconducting quantum information processor
architectures. Strong drives are required to realize fast, high-fidelity, gates and …