Light interacting with atomic ensembles: collective, cooperative and mesoscopic effects

W Guerin, MT Rouabah, R Kaiser - Journal of Modern Optics, 2017 - Taylor & Francis
Cooperative scattering has been the subject of intense research in the last years. In this
article, we discuss the concept of cooperative scattering from a broad perspective. We briefly …

Photon localization and Dicke superradiance in atomic gases

E Akkermans, A Gero, R Kaiser - Physical review letters, 2008 - APS
Photon propagation in a gas of N atoms is studied using an effective Hamiltonian describing
photon-mediated atomic dipolar interactions. The density P (Γ) of photon escape rates is …

Cooperative effects and disorder: A scaling analysis of the spectrum of the effective atomic Hamiltonian

L Bellando, A Gero, E Akkermans, R Kaiser - Physical Review A, 2014 - APS
We study numerically the spectrum of the non-Hermitian effective Hamiltonian that describes
the dipolar interaction of a gas of N≫ 1 atoms with the radiation field. We analyze the …

Microscopic theory of scattering of weak electromagnetic radiation by a dense ensemble of ultracold atoms

IM Sokolov, DV Kupriyanov, MD Havey - Journal of Experimental and …, 2011 - Springer
Based on the developed quantum microscopic theory, the interaction of weak
electromagnetic radiation with dense ultracold atomic clouds is described in detail. The …

Dispersion of the dielectric permittivity of dense and cold atomic gases

YA Fofanov, AS Kuraptsev, IM Sokolov… - Physical Review A—Atomic …, 2011 - APS
On the basis of general theoretical results developed previously in [JETP 112, 246 (2011)
JTPHES 1063-7761 10.1134/S106377611101016X], we analyze the atomic polarization …

Subradiance in dilute atomic ensembles: Role of pairs and multiple scattering

YA Fofanov, IM Sokolov, R Kaiser, W Guerin - Physical Review A, 2021 - APS
We study numerically the slow (subradiant) decay of the fluorescence of motionless atoms
after a weak pulsed excitation. We show that, in the linear-optics regime and for an excitation …

Induced dipole-dipole interactions in light diffusion from point dipoles

N Cherroret, D Delande, BA van Tiggelen - Physical Review A, 2016 - APS
We develop a perturbative treatment of induced dipole-dipole interactions in the diffusive
transport of electromagnetic waves through disordered atomic clouds. The approach is exact …

A scaling law for light scattering from dense and cold atomic ensembles

IM Sokolov, AS Kuraptsev, DV Kupriyanov… - Journal of Modern …, 2013 - Taylor & Francis
We calculate the differential cross-section of polarized light scattering from a cold and dense
atomic ensemble. The regularities in the transformation of the cross-section when increasing …

Superradiance and multiple scattering of photons in atomic gases

A Gero, E Akkermans - Physical Review A—Atomic, Molecular, and Optical …, 2007 - APS
We study the influence of cooperative effects such as superradiance and subradiance on the
scattering properties of dilute atomic gases. We show that cooperative effects lead to an …

Breakdown of the few-level approximation in collective systems

M Kiffner, J Evers, CH Keitel - Physical Review A—Atomic, Molecular, and …, 2007 - APS
The validity of the few-level approximation in dipole-dipole interacting collective systems is
discussed. As an example system, we study the archetype case of two dipole-dipole …