Open quantum systems (OQSs) cannot always be described with the Markov approximation,
which requires a large separation of system and environment time scales. An overview is …

A few decades ago, quantum optics stood out as a new domain of physics by exhibiting
states of light with no classical equivalent. The first investigations concerned single photons …

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 …

Advanced quantum technologies require scalable and controllable quantum resources,.
Gaussian states of multimode light, such as squeezed states and cluster states, are scalable …

In circuit and cavity quantum electrodynamics devices where control qubits are dispersively
coupled to high-quality-factor cavities, characteristic functions of cavity states can be directly …

Non-Gaussian operations are essential to exploit the quantum advantages in optical
continuous variable quantum information protocols. We focus on mode-selective photon …

We review some current ideas of tripartite entanglement. In particular, we consider the case
representing the next level of complexity beyond the simplest (though far from trivial) one …

We present a simple family of Bell inequalities applicable to a scenario involving arbitrarily
many parties, each of which performs two binary-outcome measurements. We show that …

We consider a six-partite, continuous-variable quantum state that we have effectively
generated by the parametric down-conversion of a femtosecond frequency comb. We show …

The addition or subtraction of a photon from a Gaussian state of light is a versatile and
experimentally feasible procedure to create non-Gaussian states. In multimode setups …