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Experimental observation of the Anderson metal-insulator transition with atomic matter waves.
An atom-optics quantum-chaotic system, the quasiperiodic kicked rotor, is realized experimentally, which is equivalent to a 3D disordered system that allows us to demonstrate the Anderson metal-insulator transition. Expand
Localization of matter waves in two-dimensional disordered optical potentials.
The diffusion constant is derived as a function of all relevant microscopic parameters and it is shown that coherent multiple scattering induces significant weak localization effects. Expand
Slow diffusion of light in a cold atomic cloud.
Theoretical prediction of a frequency-independent transport time around a sharp atomic resonance is verified and the effect of the residual velocity of the atoms at long times is observed, reducing strongly the diffusion constant. Expand
Coherent matter wave transport in speckle potentials
This paper studies multiple scattering of matter waves by a disordered optical potential in two and in three dimensions. We calculate fundamental transport quantities such as the scattering mean freeExpand
Disorder and interference: localization phenomena
The specific problem we address in these lectures is the problem of transport and localization in disordered systems, when interference is present, as characteristic for waves, with a focus onExpand
Anderson localization of solitons.
It is shown that in a spatially correlated disordered potential, the quantum motion of a bright soliton displays Anderson localization, which can be much larger than the soliton size and could be observed experimentally. Expand
Experimental test of universality of the Anderson transition.
The observation indicates that the Anderson three dimensional metal-insulator transition is of second order, with a critical exponent independent of the microscopic details; the average value 1.63±0.05 agrees very well with the numerically predicted value ν=1.58. Expand
Coherent backscattering of light by an inhomogeneous cloud of cold atoms
When a quasiresonant laser beam illuminates an optically thick cloud of laser-cooled rubidium atoms, the average diffuse intensity reflected off the sample is enhanced in a narrow angular rangeExpand
Coherent light transport in a cold strontium cloud.
The effect of internal structure as the key mechanism for the contrast reduction observed with a rubidium cold cloud is confirmed and an enhancement factor close to 2 in the helicity preserving channel is found, in agreement with theoretical predictions. Expand
Anderson Localization of Ultracold Atoms: Where is the Mobility Edge?
Using extensive numerical simulations, it is shown that the effect of anisotropy in the spatial correlations of realistic disorder configurations alone is not sufficient to explain the experimental data, and that the mobility edge obeys a universal scaling behavior, independently of the speckle geometry. Expand