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

Approximate conditional teleportation of a $$\varLambda $$ Λ -type three-level atomic state... 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-state measurement, and so the additional atom is not required. Two identical $$\varLambda $$ Λ -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 $$P_g$$ P g ) in between $$69\%\lesssim F\lesssim 100\%$$ 69 % ≲ F ≲ 100 % ( $$0.14\lesssim P_g\lesssim 0.56$$ 0.14 ≲ P g ≲ 0.56 ). At last, we illustrated that our scheme considerably improves similar previous proposals. Quantum Information Processing Springer Journals

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

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Springer US
Copyright © 2017 by Springer Science+Business Media, LLC
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
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