DIPOLE SQUEEZING OF THE ATOM IN A 2-ATOM SYSTEM - EFFECTS OF THE SUPERPOSITION STATES

Dipole squeezing of the atom in the presence of another atom is invest igated for the one-photon and two-photon transition mechanism with the initial atoms in the two-atom squeezed state and the field in a vacuu m, a coherent, or a squeezed state. For a vacuum input, the degree of squeezing is shown to depend on the photon multiplicity 'm' and the su perposition angles of the atoms, theta1 and theta2. One of the quadrat ures of the atomic polarization is found to exhibit permanent squeezin g only for some nonzero values of theta1, as well as theta2. The effec t of theta2 on the dipole squeezing, however, is found to be negligibl e for the initial field in a coherent or a squeezed state. A compariso n with the dipole squeezing of a single atom is also presented.