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

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. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Automated summary

Bright squeezed light can be generated in optical fibers using the Kerr effect, but nonconservative effects degrade the squeezing. This study analyzes two-mode polarization squeezing, which is robust against perturbations and can be generated in a polarization-maintaining fiber. Numerical optimization and comparison with experimental results are performed using an advanced model of quantum pulse evolution in the fiber.