ATOM-OPTICS BILLIARDS Non-linear dynamics with cold atoms in optical traps
نویسندگان
چکیده
We present a new experimental system (the “atom-optics billiard”) and demonstrate chaotic and regular dynamics of cold, optically trapped atoms. We show that the softness of the walls and additional optical potentials can be used to manipulate the structure of phase space.
منابع مشابه
ar X iv : q ua nt - p h / 06 06 01 8 v 1 1 Ju n 20 06 Transfer of trapped atoms between two optical tweezer potentials
The spatial control of atoms, beyond their trapping in stationary potentials, has been continuously gaining importance in investigations of ultracold gases and in the application of atomic ensembles and single atoms for cavity QED and quantum information studies. Recent progress includes the trapping and control of single atoms in dynamic potentials [1, 2], the sub-micron positioning of individ...
متن کامل2 Echo spectroscopy and Atom Optics Billiards
We discuss a recently demonstrated type of microwave spectroscopy of trapped ultra-cold atoms known as " echo spectroscopy " [M.F. Andersen et. al., Phys. Rev. Lett., in press (2002)]. Echo spectroscopy can serve as an extremely sensitive experimental tool for investigating quantum dynamics of trapped atoms even when a large number of states are thermally populated. We show numerical results fo...
متن کاملSemilinear response for the heating rate of cold atoms in vibrating traps
The calculation of the heating rate of cold atoms in vibrating traps requires a theory that goes beyond the Kubo linear response formulation. If a strong “quantum chaos” assumption does not hold, the analysis of transitions shows similarities with a percolation problem in energy space. We show how the texture and the sparsity of the perturbation matrix, as determined by the geometry of the syst...
متن کاملAll-optical atom surface traps implemented with one-dimensional planar diffractive microstructures.
We characterize the loading, containment and optical properties of all-optical atom traps implemented by diffractive focusing with one-dimensional (1D) microstructures milled on gold films. These on-chip Fresnel lenses with focal lengths of the order of a few hundred microns produce optical-gradient-dipole traps. Cold atoms are loaded from a mirror magneto-optical trap (MMOT) centered a few hun...
متن کاملObservation of chaotic and regular dynamics in atom-optics billiards.
We report on experimental observations of chaotic and regular motion of ultracold atoms confined by a billiard-shaped optical dipole potential induced by a rapidly scanning laser beam. To investigate the dynamics of the atoms confined by such an "atom-optics" billiard we measure the decay of the number of trapped atoms through a hole on the boundary. A fast and purely exponential decay, the cle...
متن کامل