Approximate conditional teleportation of Λ-type three-level atomic state based on cavity QED method beyond Bell-state measurement

Inspiring from the scheme proposed in (Zheng in Phys Rev A 69: 064,302 2004), our aim is to teleport an unknown qubit atomic state using the cavity QED method without using the explicit Bell-statemeasurement, and so the additional atom is not required. Two identical.-type three-level atoms are interacted separately and subsequently with a two-mode quantized cavity field where each mode is expressed with a single-photon field state. The interaction between atoms and field is well described via the Jaynes-Cummings model. It is then shown that how if the atomic detection results a particular state of atom 1, an unknown state can be appropriately teleported from atom 1 to atom 2. This teleportation procedure successfully leads to the high fidelity F (success probability P-g) in between 69% <= F 100% <= 0.14 <= Pg <= 0.56). At last, we illustrated that our scheme considerably improves similar previous proposals.