Quantum technologies exploit entanglement to revolutionize computing, measurements, and
communications. This has stimulated the research in different areas of physics to engineer …

We comprehensively review the quantum theory of the polarization properties of light. In
classical optics, these traits are characterized by the Stokes parameters, which can be …

A complete set of generalized spin-squeezing inequalities is derived for an ensemble of
particles with an arbitrary spin. Our conditions are formulated with the first and second …

Polarization is one of light's most versatile degrees of freedom for both classical and
quantum applications. The ability to measure light's state of polarization and changes …

We study nonlinear interferometry applied to a measurement of atomic spin and
demonstrate a sensitivity that cannot be achieved by any linear-optical measurement with …

We study the three-dimensional nature of the quantum interface between an ensemble of
cold, trapped atomic spins and a paraxial laser beam, coupled through a dispersive …

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

We introduce an entanglement-depth criterion optimized for planar quantum-squeezed
(PQS) states. It is connected with the sensitivity of such states for estimating a phase …

This paper reviews the progress that has been made in our knowledge of quantum
correlations at the mesoscopic and macroscopic level. We begin by summarizing the …

We study the generation of planar quantum squeezed (PQS) states by quantum
nondemolition (QND) measurement of an ensemble of Rb 87 atoms with a Poisson …