Physics – Quantum Physics
Scientific paper
2001-07-05
Phys. Rev. A 64, 053804 (2001)
Physics
Quantum Physics
22 pages Revtex, 9 figures, to appear in PRA
Scientific paper
10.1103/PhysRevA.64.053804
Since the work of Anderson on localization, interference effects for the propagation of a wave in the presence of disorder have been extensively studied, as exemplified in coherent backscattering (CBS) of light. In the multiple scattering of light by a disordered sample of thermal atoms, interference effects are usually washed out by the fast atomic motion. This is no longer true for cold atoms where CBS has recently been observed. However, the internal structure of the atoms strongly influences the interference properties. In this paper, we consider light scattering by an atomic dipole transition with arbitrary degeneracy and study its impact on coherent backscattering. We show that the interference contrast is strongly reduced. Assuming a uniform statistical distribution over internal degrees of freedom, we compute analytically the single and double scattering contributions to the intensity in the weak localization regime. The so-called ladder and crossed diagrams are generalized to the case of atoms and permit to calculate enhancement factors and backscattering intensity profiles for polarized light and any closed atomic dipole transition.
Delande Dominique
Jonckheere Thibaut
Miniatura Christian
Mueller Cord A.
No associations
LandOfFree
Weak localization of light by cold atoms: the impact of quantum internal structure does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Weak localization of light by cold atoms: the impact of quantum internal structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weak localization of light by cold atoms: the impact of quantum internal structure will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-652671