According to quantum theory the energy exchange between physical systems is quantized.
As a direct consequence, measurement sensitivities are fundamentally limited by …

Quantum-enhanced measurements exploit quantum mechanical effects for increasing the
sensitivity of measurements of certain physical parameters and have great potential for both …

Gaussian states have played an important role in the physics of continuous-variable
quantum systems. They are appealing for the experimental ease with which they can be …

Squeezed light generation has come of age. Significant advances on squeezed light
generation have been made over the last 30 years—from the initial, conceptual experiment …

Quantum physics allows for entanglement between microscopic and macroscopic objects,
described by discrete and continuous variables, respectively. As in Schrödinger's famous cat …

The first quantum technology that harnesses quantum mechanical effects for its core
operation has arrived in the form of commercially available quantum key distribution …

Research in quantum information processing has followed two different directions: the use of
discrete variables (qubits) and that of high-dimensional, continuous-variable Gaussian …

We develop a resource theory for continuous-variable systems grounded on operations
routinely available within current quantum technologies. In particular, the set of free …

During the past decade the interaction of light with multiatom ensembles has attracted much
attention as a basic building block for quantum information processing and quantum state …

This review covers the latest developments in continuous-variable quantum-state
tomography of optical fields and photons, placing a special emphasis on its practical aspects …