Squeezing Properties of Degenerate High-Order Hyper-Raman Lines Emitted by Two-Level System

Abstract

Quantized descriptions of nonlinear-optical processes can be relevant from the perspective of developing novel nonclassical sources of light. As a special case, it is useful to characterize light emitted by classically driven systems, since the excitations in many practical cases are laser beams. As a material model, we choose a two-level system. In earlier work, Phys. Rev. A 104, 033703, (2021), we investigated photon statistics and intermodal cross-correlations and noted that squeezing is primarily present in specific sets of parameters, corresponding to the degeneracy of hyper-Raman lines. Here we focus on this specific set of parameters, presenting details of the squeezing.