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 …

We present a comprehensive architectural analysis for a proposed fault-tolerant quantum
computer based on cat codes concatenated with outer quantum error-correcting codes. For …

We propose a universal mechanism for the Josephson diode effect in short Josephson
junctions. The proposed mechanism is due to finite Cooper pair momentum and is a …

The recent discovery of the intrinsic supercurrent diode effect, and its prompt observation in
a rich variety of systems, has shown that non-reciprocal supercurrents naturally emerge …

Quantum superpositions of macroscopically distinct classical states—so-called Schrödinger
cat states—are a resource for quantum metrology, quantum communication and quantum …

The unique features of quantum theory offer a powerful new paradigm for information
processing. Translating these mathematical abstractions into useful algorithms and …

By applying a microwave drive to a specially designed Josephson circuit, we have realized
a double-well model system: a Kerr oscillator submitted to a squeezing force. We have …

Superconducting diodes are proposed nonreciprocal circuit elements that should exhibit
nondissipative transport in one direction while being resistive in the opposite direction …

Fast, high-fidelity operations between microwave resonators are an important tool for
bosonic quantum computation and simulation with superconducting circuits. An attractive …

Schrödinger cat states, quantum superpositions of macroscopically distinct classical states,
are an important resource for quantum communication, quantum metrology and quantum …