GENERATION OF 2-MODE SQUEEZED PAIR-COHERENT STATES OF THE MOTION OF ATRAPPED ION

We propose a scheme for generating motional two-mode squeezed pair-coh erent states; of an ion trapped in a three-dimensional isotropic trap. It is based on the multichromatic excitation of the ion by six lasers in the x-y plane, and one in the z-axis. Under certain conditions, th e system finally reaches the steady state, in which the vibrational mo tions in the x and y axes are in the two-mode squeezed pair-coherent s tate and the motion in the z-axis is in the vacuum state.