The role of quasi-momentum in the resonant dynamics of the atom-optics kicked rotor

Sandro Wimberger, Mark Sadgrove

Research output: Contribution to journalArticle

14 Citations (Scopus)

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 languageEnglish
Pages (from-to)10549-10557
Number of pages9
JournalJournal of Physics A: Mathematical and General
Volume38
Issue number49
DOIs
Publication statusPublished - 2005 Dec 9

ASJC Scopus subject areas

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

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