### Abstract

We examine the effect of the initial atomic momentum distribution on the dynamics of the atom-optical realization of the quantum kicked rotor. The atoms are kicked by a pulsed optical lattice, the periodicity of which implies that quasi-momentum is conserved in the transport problem. We study and compare experimentally and theoretically two resonant limits of the kicked rotor: in the vicinity of the quantum resonances and in the semiclassical limit of the vanishing kicking period. It is found that for the same experimental distribution of quasi-momenta, significant deviations from the kicked rotor model are induced close to quantum resonance, while close to the classical resonance (i.e. for a small kicking period) the effect of the quasi-momentum vanishes.

Original language | English |
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Pages (from-to) | 10549-10557 |

Number of pages | 9 |

Journal | Journal of Physics A: Mathematical and General |

Volume | 38 |

Issue number | 49 |

DOIs | |

Publication status | Published - 2005 Dec 9 |

### ASJC Scopus subject areas

- Statistical and Nonlinear Physics
- Mathematical Physics
- Physics and Astronomy(all)

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## Cite this

*Journal of Physics A: Mathematical and General*,

*38*(49), 10549-10557. https://doi.org/10.1088/0305-4470/38/49/007