On the Polarization of non-Guassian optical quantum field: higher-order optical-polarization

TL;DR

This paper introduces a new framework for analyzing higher-order polarization in non-Gaussian quantum optical fields, addressing limitations of classical Stokes theory and focusing on complex quantum states like Schrödinger Cat states.

Contribution

It proposes a generalized approach to higher-order optical polarization in quantum fields, especially for non-Gaussian and entangled states, surpassing classical polarization characterization methods.

Findings

Higher-order polarization is highly basis-dependent.

Classical Stokes parameters are insufficient for non-Gaussian quantum states.

The new framework effectively characterizes complex quantum polarization structures.

Abstract

Polarization of light signifies transversal, anisotropic and asymmetrical statistical property of electromagnetic radiation about direction of propagation. Traditionally, optical-polarization is characterized by Stokes theory susceptible to be insufficient in assessing polarization structure of optical quantum fields and, also, does not decipher twin characteristic polarization parameters (ratio of real amplitudes and difference in phases). An alternative way, in spirit of classical description of optical-polarization, is introduced which can be generalized to deal higher-order polarization of quantum light, particularly, prepared in non-Guassian Schrodinger Cat or Cat-like states and entangled bi-modal coherent states. On account of pseudo mono-modal or multi-modal nature of such optical quantum field, higher-order polarization is seen to be highly sensitive to the basis of description.