title: Momentum distributions for the quantum delta-kicked rotor with decoherence
abstract: We report on the momentum distribution line shapes for the quantum delta-kicked rotor in the presence of environment induced decoherence. Experimental and numerical results are presented. In the experiment ultracold cesium atoms are subjected to a pulsed standing wave of near resonant light. Spontaneous scattering of photons destroys dynamical localization. For the scattering rates used in our experiment the momentum distribution shapes remain essentially exponential.
authors.affiliation: Department of Physics, University of Auckland, New Zealand.
authors.initials: K
authors.lastname: Vant
authors.initials: G
authors.lastname: Ball
authors.initials: N
authors.lastname: Christensen