Quantum information is vulnerable to environmental noise and experimental imperfections,
hindering the reliability of practical quantum information processors. Therefore, quantum …

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

To build a universal quantum computer from fragile physical qubits, effective implementation
of quantum error correction (QEC) is an essential requirement and a central challenge …

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

Superconducting microwave circuits incorporating nonlinear devices, such as Josephson
junctions, are a leading platform for emerging quantum technologies. Increasing circuit …

Analog quantum simulators, which efficiently represent model systems, have the potential to
provide new insight toward naturally occurring phenomena beyond the capabilities of …

The quantum simulation of dynamical gauge field theories offers the opportunity to study
complex high-energy physics with controllable low-energy devices. For quantum …

These are the lecture notes from the 2019 Les Houches Summer School on" Quantum
Information Machines". After a brief introduction to quantum error correction and bosonic …

Dissipationless nonlinearities for three-wave mixing are a key component of many
superconducting quantum devices, such as amplifiers and bosonic qubits. So far, such third …

Autonomous quantum error correction has gained considerable attention to avoid
complicated measurements and feedback. Despite its simplicity compared with the …