Photon emission of a two-level atom passing through double single-mode cavity fields

A two-level atom passing through double spatially separated single-mode cavity fields is studied. We investigate the effecting factors of photon emission probabilities of the atom, which include the kinetic energy of the atom, the length of the cavity and the separation between the two cavities. The results show that in the case of ultra-cold atom, when the kinetic energy of the atom is small (k/k(0) 1), the photon emission probabilities have multiple resonant peaks and the photon emission probability of the atom in the first cavity is greater than that in the second one. When the kinetic energy of the atom is big (k/k(0) > 1), the length of the cavity has great effect on the photon emission probabilities. The present work shows that the photon emission probabilities may be modulated by controlling the center-of-mass motion of the atom.