Experimental investigation of early-time diffusion in the quantum kicked rotor using a Bose-Einstein condensate
Soft Condensed Matter
2009-11-10 v2
Abstract
We report the experimental observation of resonances in the early-time momentum diffusion rates for the atom-optical delta-kicked rotor. In this work a Bose-Einstein condensate provides a source of ultra-cold atoms with an ultra-narow initial momentum distribution, which is then subjected to periodic pulses (or "kicks") using an intense far-detuned optical standing wave. A quantum resonance occurs when the momentum eigenstates accumulate the same phase between kicks leading to ballistic energy growth. Conversely, an anti-resonance is observed when the phase accumulated from successive kicks cancels and the system returns to its initial state. Our experimental results are compared with theoretical predictions.
Keywords
Cite
@article{arxiv.cond-mat/0401346,
title = {Experimental investigation of early-time diffusion in the quantum kicked rotor using a Bose-Einstein condensate},
author = {G. Duffy and S. Parkins and T. Muller and M. Sadgrove and R. Leonhardt and A. C. Wilson},
journal= {arXiv preprint arXiv:cond-mat/0401346},
year = {2009}
}
Comments
6 pages, 6 figures