This paper verifies that a photon eradiated Bose-Einstein condensate will cut the frequency of incoming photons by dividing that frequency between N numbers of atoms.
http://arxiv.org/pdf/1203.1261v1.pdf Rydberg excitation of a Bose-Einstein condensate “The results of theoretical simulations are represented by the continuous lines. According to the super-atom picture the collective Rabi frequency for the coherent excitation of N atoms is frequency (collective) = square root(number of atoms) X frequency(single); Where the single-particle Rabi frequency (single) is app 2 pi x 200 kHz for our experimental parameters.”
