Practical implementation of a nontrivial evolution «unravelling» for a resonantly fluorescing atom

One of the consequences of the implementation of the so-called nontrivial «unravelling» of the resonance fluorescence of a two-level atom is considered. Namely, we consider the artificial re-aiming of the environment at the detection of a new set of events that are different from the photoemission to the components of a resonance fluorescence triplet. The atomic states obtained after the detection of new events are studied, and the element providing the maximum probability of the atom occurring in the excited state is found for the simplest unravelling class.