Degree of polarization in quantum optics

Degree of polarization in quantum optics

Quantum optics entails polarization properties that cannot be fully described by the classical Stokes parameters. In this work, we characterize the polarization of classical as well as quantum fields by means of a probability distribution on the Poincaré sphere. This serves to define the degree of polarization of a field state as the distance between the corresponding polarization distribution ...

Quantum theory of light and noise polarization in nonlinear optics.

We present a consistent quantum theory of the electromagnetic field in nonlinearly responding causal media, with special emphasis on Chi(2) media. Starting from QED in linearly responding causal media, we develop a method to construct the cubic Hamiltonian expressed in terms of the complex nonlinear susceptibility in a quantum mechanically consistent way. In particular, we show that the method ...

Degree of polarization in laser speckles from turbid media: implications in tissue optics.

The degree of polarization (DOP) of laser-speckle fields, where the speckles were generated by a polarized laser beam incident upon two kinds of samples: ground glass and wax, was investigated within a single coherence area as well as over multiple coherence areas. For the surface-scattering ground glass, the incident polarization state was preserved in the speckle field, and hence the DOP rema...

Polarization Optics of Periodic Media

Polarization distribution and degree of polarization for three-dimensional quantum light fields

We introduce a probability distribution for polarization of three-dimensional quantum light fields as a marginal of the quadrature Q function for a three-mode field by removing the variables irrelevant for polarization stotal intensity and global phased. The probability distribution turns out to be determined by projection on SUs3d coherent states. We introduce a degree of polarization as the d...