Bosonic quantum devices offer a novel approach to realize quantum computations, where
the quantum two-level system (qubit) is replaced with the quantum (an) harmonic oscillator …

The design of quantum hardware that reduces and mitigates errors is essential for practical
quantum error correction (QEC) and useful quantum computation. To this end, we introduce …

Quantum bits (qubits) are prone to several types of error as the result of uncontrolled
interactions with their environment. Common strategies to correct these errors are based on …

Although strong nonlinear interactions between quantized excitations are an important
resource for quantum technologies based on bosonic oscillator modes, most …

Quantum tunneling is the phenomenon that makes superconducting circuits “quantum”.
Recently, there has been a renewed interest in using quantum tunneling in phase space of a …

Flux-biased loops including one or more Josephson junctions are ubiquitous elements in
quantum information experiments based on superconducting circuits. These quantum …

The Kerr-cat qubit is a bosonic qubit in which multiphoton Schrödinger cat states are
stabilized by applying a two-photon drive to an oscillator with a Kerr nonlinearity. The …

Mechanical degrees of freedom are natural candidates for continuous-variable quantum
information processing and bosonic quantum simulations. However, these applications …

These lecture notes from the 2019 Les Houches Summer School on" Quantum Information
Machines" are intended to provide an introduction to classical and quantum error correction …

Encoding quantum information onto bosonic systems is a promising route to quantum error
correction. In a cat code, this encoding relies on the confinement of the dynamics of the …