The subject of quantum phase has experienced a renewed interest in recent times. The
rapidly increasing effort devoted to this topic reveals a latent expectation ready to trigger a …

We discuss different proposals for the degree of polarization of quantum fields. The simplest
approach, namely making a direct analogy with the classical description via the Stokes …

We propose a spin model which exhibits the main properties of the Kerr medium. The
description of the model uses a recently generalized quasiprobability distribution (Wigner …

In our paper we consider the non-classical behaviour of both the Hermitian (observable)
Stokes parameters of light and the phase difference of two modes that describe the quantum …

This contribution addresses the quantum picture of polarization for two-mode harmonic
electromagnetic fields. Because of electric field commutation relations, the quantum electric …

We have carried out polarization measurements on a two-photon quantum state generated
by spontaneous parametric down conversion. Our measurements show that the state is …

A possibility of the formation of polarizationsqueezed light in the case of interaction of two
orthogonally polarized modes in a spatio-periodically nonlinear Kerr-like medium is …

We study contradirectional couplers composed of two linearly coupled nonlinear Kerr
waveguides. Intensity-dependent equations of motion are approximately solved, using a …

In this paper, based on the well-known one-mode and two-mode squeezed states, we
introduce the two-mode and four-mode entangled squeezed states. Next, in order to …

The quantum mechanical polarization properties of a nondegenerate second harmonic
generator, where a nonlinear type II crystal is placed inside a cavity, are investigated …