Faithful Teleportation of an Unknown Atomic-Entangled State Without Bell-State Measurement

<Abstract>An alternative scheme is proposed for teleportation of an unknown atomic-entangled state.The scheme is based on the resonant interaction of a two-mode cavity field with a A-type three-level atom.In contrast with the previously proposed scheme of [Commun.Theor.Phys.47 (2007) 253],the present scheme is ascendant,since the fidelity is 1.0 in principle similarly without the Bell-state measurement.The scheme may be generalized to not only the teleportation of the cavity-mode-entangled-state but also the teleportation of the multi-atomic entangled states included in generalized GHZ states.And the scheme is experimentally feasible based on the current cavity QED technique.