TY - JOUR
T1 - The role of quasi-momentum in the resonant dynamics of the atom-optics kicked rotor
AU - Wimberger, Sandro
AU - Sadgrove, Mark
N1 - Copyright:
Copyright 2005 Elsevier B.V., All rights reserved.
PY - 2005/12/9
Y1 - 2005/12/9
N2 - 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.
AB - 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.
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U2 - 10.1088/0305-4470/38/49/007
DO - 10.1088/0305-4470/38/49/007
M3 - Article
AN - SCOPUS:28244447724
VL - 38
SP - 10549
EP - 10557
JO - Journal of Physics A: Mathematical and Theoretical
JF - Journal of Physics A: Mathematical and Theoretical
SN - 1751-8113
IS - 49
ER -