Optimizing the generation of polarization squeezed light in nonlinear optical fibers driven by femtosecond pulses

TL;DR

This paper presents a detailed numerical analysis and optimization of polarization squeezing in optical fibers, accounting for nonconservative effects, to improve the generation of bright squeezed light using femtosecond pulses.

Contribution

It introduces a comprehensive quantum pulse evolution model including nonconservative effects and performs optimization for polarization squeezing in fibers, aligning with experimental data.

Findings

Optimized pulse parameters enhance polarization squeezing.

Numerical results match experimental observations.

Two-mode polarization squeezing is robust and effective.

Abstract

Bright squeezed light can be generated in optical fibers utilizing the Kerr effect for ultrashort laser pulses. However, pulse propagation in a fiber is subject to nonconservative effects that deteriorate the squeezing. Here, we analyze two-mode polarization squeezing, which is SU(2)-invariant, robust against technical perturbations, and can be generated in a polarization-maintaining fiber. We perform a rigorous numerical optimization of the process and the pulse parameters using our advanced model of quantum pulse evolution in the fiber that includes various nonconservative effects and real fiber data. Numerical results are consistent with experimental results.