Polychromatic atom optics for atom interferometry Samuel Lellouch, Oliver Ennis, Ramiz Haditalab, Mehdi Langlois and Michael Holynski EPJ Quantum Technol., 10 1 (2023) 9 Published online: 08 March 2023 DOI: 10.1140/epjqt/s40507-023-00165-2