G. Harel et G. Kurizki, FOCK-STATE PREPARATION FROM THERMAL CAVITY FIELDS BY MEASUREMENTS ON RESONANT ATOMS, Physical review. A, 54(6), 1996, pp. 5410-5414
We show that by combining nonselective and conditional measurements on
a sequence of excited two-level atoms traversing a resonant cavity, o
ne can construct a practical strategy for compressing an arbitrary pho
ton-number distribution (thermal distributions included) into a desire
d Fock state with high probability of success and low number of measur
ements.