We present experimental measurements of the mean energy for the atom optics kicked rotor after just two kicks. The energy is found to deviate from the quasi--linear value for small kicking periods. The observed deviation is explained by recent theoretical results which include the effect of a non--uniform initial momentum distribution, previously applied only to systems using much colder atoms than ours.
Cite
@article{arxiv.quant-ph/0409031,
title = {Deviations from early--time quasilinear behaviour for the quantum kicked rotor near the classical limit},
author = {Mark Sadgrove and Terry Mullins and Scott Parkins and Rainer Leonhardt},
journal= {arXiv preprint arXiv:quant-ph/0409031},
year = {2009}
}