In the first part of this talk I will show that, for an atom driven through Rabi oscillations under the action of Raman lasers, the CP interaction of the atom with a material surface may give rise to a renormalisation of the Rabi frequency . Likewise, CP-induced Rabi oscillations may generate between two Zeeman sub-levels of a free atom in the vicinity of a reflecting surface .
Next, I will outline the computation of the vdW interaction between two non-identical atoms, one of which is prepared in an excited state. It is found that this interaction presents oscillations, both in time and in space . Finally, I will discuss recent results on the quantum friction that an excited atom experiences as it moves at constant velocity parallel to a dilute atomic surface .