We introduce atomSmltr, a Python package for simulating laser cooling in complex magnetic field and laser beams geometries. The package features a modular design that enables users to easily construct experimental setups, including magnetic fields, laser beams and other environment components, and to perform a range of simulations within these configurations. We present the overall architecture of atomSmltr and illustrate its capabilities through a series of examples, including benchmarks against standard textbook cases in laser cooling.
@article{arxiv.2511.20596,
title = {atomSmltr: a modular Python package to simulate laser cooling setups},
author = {Mateo Weill and Andrea Bertoldi and Alexandre Dareau},
journal= {arXiv preprint arXiv:2511.20596},
year = {2026}
}