A golden age for heavy-quarkonium physics dawned a decade ago, initiated by the
confluence of exciting advances in quantum chromodynamics (QCD) and an explosion of …

We report direct, time-resolved observations of single-photon superradiance in a highly
extended, elliptical sample of cold Rb 87 atoms. The observed rapid decay rate is …

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 measure the coherent scattering of light by a cloud of laser-cooled atoms with a size
comparable to the wavelength of light. By interfering a laser beam tuned near an atomic …

We produce oriented rotational wave packets in CO and measure their characteristics via
high harmonic generation. The wave packet is created using an intense, femtosecond laser …

Absorption imaging with quasi-resonant laser light is a commonly used technique for
probing ultra-cold atomic gases in various geometries. In this paper, we investigate some …

We study the subradiant collective states of a periodic chain of two-level atoms with either
transversal or longitudinal transition dipole moments with respect to the chain axis. We show …

We study experimentally and numerically the equilibrium density profiles of a trapped two-
dimensional Rb 87 Bose gas and investigate the equation of state of the homogeneous …

On the basis of general theoretical results developed previously [IM Sokolov, J. Exp. Theor.
Phys. 112, 246 (2011) JTPHES 1063-7761 10.1134/S106377611101016X], we analyze …

Based on the developed quantum microscopic theory, the interaction of weak
electromagnetic radiation with dense ultracold atomic clouds is described in detail. The …