The Wigner function was formulated in 1932 by Eugene Paul Wigner, at a time when
quantum mechanics was in its infancy. In doing so, he brought phase space representations …

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 …

Quantum non-Gaussian states of photons and phonons are conclusive and direct witnesses
of higher-than-quadratic nonlinearities in optical and mechanical processes. Moreover, they …

The so-called stellar formalism allows us to represent the non-Gaussian properties of single-
mode quantum states by the distribution of the zeros of their Husimi Q function in phase …

This book is designed to give a background on the origins and development of Wigner
functions, as well as its mathematical underpinnings. Along the way the authors emphasise …

We report a measurement workflow free of systematic errors consisting of a reconfigurable
photon-number-resolving detector, custom electronic circuitry, and faithful data-processing …

We introduce a genetic algorithm that designs quantum optics experiments for engineering
quantum states with specific properties. Our algorithm is powerful and flexible, and can …

Photon number resolving detectors are the ultimate measurement of quantum optics, which
is the reason why developing the technology is getting significant attention in recent years …

Light is an essential tool for connections between quantum devices and for diagnostic
processes in quantum technology. Both applications deal with advanced nonclassical states …

We derive tight nonclassicality criteria for an unbalanced Hanbury Brown–Twiss
measurement scheme, where an input optical beam is split into two outputs on an …