CHINESE JOURNAL OF PHYSICS VOL. 40, NO. 1 FEBRUARY 2002

Preparation of Motional Two-Mode Squeezed Pair Coherent States
in an Anisotropic Trap

Shi-Biao Zheng^*

Department of Electronic Science and Applied Physics, Fuzhou University,

Fuzhou 350002, China
(Received September 24, 2001)

We propose a scheme for generating motional two-mode squeezed pair coherent states of an ion confined in a three-dimensional anisotropic trap. In the scheme the ion is multichromatically excited by three lasers in the x-y plane, and one in the z axis. Under certain conditions, the system finally reaches a steady state, in which the vibrational motions in the x and y axes are in the two-mode squeezed pair coherent state.

PACS. 42.50.Vk - Mechanical effects of light on atoms, molecules, electrons, and ions.
PACS. 42.50.Dv - Nonclassical field states; squeezed, antibunched, and sub- Poissonian
states; operational definitions of the phase of the field; phase measure-
ments.

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