Controlling atomic motion: from single particle classical mechanics to many body quantum dynamics
MetadataShow full item record
This dissertation covers a series of experiments designed to control atomic motion. The experiments progress from being completely classical in nature to being described by many-body quantum mechanical models. The first experiment involves an experimental realization of a billiard using cold atoms and dipole potentials. The experiment was performed in a regime where the dynamics of the system were completely classical in nature. By adjust- ments of the shape of the billiard, it was demonstrated that the atomic motion within the billiard could be made stable and predictable or chaotic thereby al- lowing ergodic mixing. The subsequent experiment demonstrated the ability to control the center of mass motion of a collection of atoms without any a priori knowledge of the system. A minimally nondestructive method based on the quantum interaction of the atoms with a light field was used to measure the collective speed of the atoms. This information was utilized as a feedback signal to load the atoms into a co-moving trap that was subsequently brought to rest in the laboratory frame. Finally, Bose-Einstein condensation in one and two dimensions has been performed. This will allow for the experimental realization of the quantum tweezer for atoms. In this system, a Bose-Einstein condensate is used as a reservoir to extract single atoms. Taking advantage of the coherence properties of the condensate as well as the mean field inter- action of atoms within the tweezer, single atoms can be extracted with unit probability into the ground state of a dipole trap.