Observation of coherent backscattering of light by cold atoms
  Coherent backscattering (CBS) of light waves by a random medium is a signature of interference effects in multiple scattering. This effect has been studied in many systems ranging from white paint to biological tissues. Recently, we have observed CBS from a sample of laser-cooled atoms, a scattering medium with interesting new properties. In this paper we discuss various effects, which have to be taken into account for a quantitative study of coherent backscattering of light by cold atoms. 
G. Labeyrie (1), C. A. M\"uller (1), D. S. Wiersma (2), Ch. Miniatura   (1) and R.Kaiser (1) ((1) INLN, Nice, France, (2) LE...