Preparation of Entangled Atomic States via Atoms Interacting with the Cavity-Field in SU(1,1) Coherent State

A new scheme is presented for generating atomic entangled states based on atoms-cavity-field interaction. After suitably prepared Ξ-type atoms interact with the cavity-field in the SU(1,1) coherent state initially, a subsequent measurement on this field projects the atoms onto the entangled states.