Yang Yaping, Fleischhauer M, Zhu Shi-Yao
Fachbereich Physik, University of Kaiserslautern, D-67663 Kaiserslautern, Germany.
Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Jul;68(1 Pt 2):015602. doi: 10.1103/PhysRevE.68.015602. Epub 2003 Jul 3.
We investigate the dynamical properties of the radiation field emitted from an excited two-level atom in a photonic crystal. If the transition frequency of the atom lies within a certain frequency range above the band edge, the emitted field consists of two components that show a different decay dynamics. In particular it is shown that one field component decreases faster than the atomic population with a decay constant depending on the distance from the atom. As a consequence, the decay rate of the electromagnetic field is spatially varying and, in general, can not be identified with the corresponding rate for the atomic population.
