This repository contains the source code used to produce the numerical results presented in "Degenerate Squeezing in Waveguides: A Unified Theoretical Approach" Journal of Physics: Photonics 2 035001 (2020)

The library kerrlib.py uses the methods derived in the reference above to numerically propagate the mean field and quadratic moments of a pulse undergoing a cubic nonlinearity in a waveguide. test_kerrlib.py contains unit tests of the main library. Finally, in numerical_example_dual_pump.py you can find an example calculation, described in detail in Sec. III.C. of the paper above.

To perform numerical evaluations this library requires NumPy and SciPy. The unit tests use pytest, matplotlib is used for graph generation and the decompositions module of Strawberry Fields is used to perform Autonne decompositions in plot_gen.py.

All of these prerequisites can be installed via pip:

pip install numpy scipy pytest matplotlib strawberryfields

L.G. Helt and N. Quesada

If you are doing any research using this source code, please cite the following paper:

L.G. Helt and N. Quesada. "Degenerate Squeezing in Waveguides: A Unified Theoretical Approach" Journal of Physics: Photonics 2 035001 (2020)

This source code is free and open source, released under the Apache License, Version 2.0.