PyLCP: A python package for computing laser cooling physics

TL;DR

PyLCP is a versatile Python package that simulates laser cooling physics, allowing customizable parameters and multiple approximation levels, validated through reproducing known phenomena and simulating narrow-line magneto-optical traps.

Contribution

The paper introduces PyLCP, a user-friendly, adaptable Python software with multiple approximation levels for simulating laser cooling, filling a gap in accessible computational tools.

Findings

Successfully reproduces known laser cooling phenomena

Simulates narrow-line magneto-optical traps in strontium isotopes

Offers a flexible, validated tool for laser cooling research

Abstract

We present a python object-oriented computer program for simulating various aspects of laser cooling physics. Our software is designed to be both easy to use and adaptable, allowing the user to specify the level structure, magnetic field profile, or the laser beams' geometry, detuning, and intensity. The program contains three levels of approximation for the motion of the atom, applicable in different regimes offering cross checks for calculations and computational efficiency depending on the physical situation. We test the software by reproducing well-known phenomena, such as damped Rabi flopping, electromagnetically induced transparency, stimulated Raman adiabatic passage, and optical molasses. We also use our software package to quantitatively simulate recoil-limited magneto-optical traps, like those formed on the narrow $^1$S$_0\rightarrow ^3$P$_1$ transition in $^{88}$Sr and $^{87}$Sr.