We investigate collective emission from coherently driven ultracold 88Sr atoms. We perform
two sets of experiments using a strong and weak transition that are insensitive and sensitive …

Coherent effects manifested in light scattering from cold, optically dense and disordered
atomic systems are reviewed from a primarily theoretical point of view. Development of the …

We theoretically study the propagation of light through a cold atomic medium, where the
effects of motion, laser intensity, atomic density, and polarization can all modify the …

The presence of superradiance and subradiance in microscopic and mean-field approaches
to light scattering in atomic media is investigated. We show that these phenomena are …

We compare two different models of transport of light in a disordered system with a spherical
Gaussian distribution of scatterers. A coupled dipole model, taking into account all …

We consider the theory of spontaneous emission for a random medium of stationary two-
level atoms. We investigate the dynamics of the field and atomic probability amplitudes for a …

A multiple scattering model of a quantum particle interacting with a random Lorentz gas of
fixed point scatterers is established in an Euclidean space of arbitrary dimension. At the core …

We interpret cooperative scattering by a collection of cold atoms as a multiple-scattering
process. Starting from microscopic equations describing the response of N atoms to a probe …

When a photon is sent onto an atomic ensemble, it interacts collectively with the N atoms of
the sample and not simply with one of them. This results in measurable modifications in the …

Collective effects in the atom–light interaction are of great importance for cold-atom-based
quantum devices or fundamental studies on light transport in complex media. Here we …