Using Conditional Measurements to Combat Decoherence
  With the help of some remarkable examples, it is shown that conditional measurements performed on two-level atoms just after they have interacted with a resonant cavity field mode are able to recover the coherence of number-state superpositions, which is lost due to dissipation. 
Mauro Fortunato (1), Gil Harel (2), and G. Kurizki (2) ((1) University   of Camerino, (2) Weizmann Institute of Science)