Squeezing properties of the Kerr-down conversion system

TL;DR

This paper introduces a new two-mode quantum system combining Kerr-like and down conversion processes, analyzes its squeezing properties, and finds that combined processes produce less nonclassicality than individual ones.

Contribution

It presents an exact solution for the Kerr-down conversion system and explores its quadrature squeezing, providing insights into the interplay of Kerr and down conversion effects.

Findings

Separate Kerr-like and down-conversion processes produce more nonclassical effects than their combination.

Exact solutions of the system's dynamical equations are obtained.

Different types of quadrature squeezing are analyzed and characterized.

Abstract

In this Letter we describe a new two-mode system, which consists of Kerr-like medium and down conversion process, called the Kerr-down conversion system. Under a certain condition we can obtain an exact solution of the dynamical equations of motion. For this system we investigate different kinds of quadrature squeezing, e.g., single-mode, two-mode and sum-squeezing. Also we give a more general definition of the principal squeezing. We show that the amounts of nonclassical effects produced by the Kerr-like and down-conversion processes separately are greater than those obtained from the Kerr-down conversion system where both the processes are in competition.