STEADY STATE BEHAVIOR OF A THREE-LEVEL ATOM IN A TWO-MODE PARAMETRICALLY DRIVEN CAVITY

We have studied the steady-state behavior of a cascade three-level atom in a two-mode bad cavity which is parametrically driven by a classical field. In the weak field limit, it has been found that the atomic population trapping in the upper-level depends on the cavity photon number not only linearly but also quadratically, and the atomic dipole squeezing can occur.