Adapting the quantum theory of multiple backscattering of light to the spectroscopic probing of feeble dipole-dipole interactions in dilute thermal gases, we recently succeeded [1] to elucidate the origin of some hitherto unexplained spectroscopic features in experimentally detected fluorescence signals. In particular, we could clarify the roles of disorder and of the retarded part of the interaction. We now are seeking a PhD student who is enthusiastic to further develop our formalism for the faithful theoretical modeling of experiments simultaneously performed in Freiburg. This will involve, inter alia, proper account of the electronic structure of the specific atomic target, the development of an efficient method for random averages, and a deeper investigation of the competition between near- and far-field contributions to the interatomic interaction. (A. Buchleitner, L. Bruder, F. Stienkemeier, G. Sansone, D. Jones)

[1] Ames et al., arXiv:2104.04700

Research group of Prof. Buchleitner