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ACTA PHOTONICA SINICA

Teleportation of an Unknown Atomic-entangled State via the Interaction of V-type Three-level-atom with Two-mode Cavity Field

Lu Dao

Published Jan 1, 2009• 0 citations
OpenAlex

Abstract

Time evolution of state vector of the system of V-type three-level-atom interacting with two-mode cavity field is obtained.An alternative scheme is proposed for teleportation of an unknown atomic-entangled state without the Bell-state measurement.The scheme is based on the resonant interaction of V-type three-level-atom with two-mode cavity field.By means of selective measurement on the atom to be teleported state,it follows that the teleportation of an unknown atomic-entangled state is realized.And the scheme is experimentally feasible based on the current cavity QED technique and the success probability is 1/16.

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Time evolution of state vector of the system of V-type three-level-atom interacting with two-mode cavity field is obtained.An alternative scheme is proposed for teleportation of an unknown atomic-entangled state without the Bell-state measurement.The scheme is based on the resonant interaction of V-type three-level-atom with two-mode cavity field.By means of selective measurement on the atom to be teleported state,it follows that the teleportation of an unknown atomic-entangled state is realized.And the scheme is experimentally feasible based on the current cavity QED technique and the success probability is 1/16.
The interaction of V-type three-level atom with two-mode cavity field is described and the interaction formula between atom and cavity field is obtained.An alternative scheme is proposed for teleportation of an unknown atomic-entangled state without the Bell-state measurement.The scheme is based on the resonant interaction of V-type three-level-atom with two-mode cavity field.By means of selective measurement on the atom to be teleported state,it follows that the teleportation of an unknown atomic-entangled state is realized.And the scheme is experimentally feasible based on the current cavity QED technique and the success probability is 1/16.
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 Λ-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.
We propose a scheme for teleportation of an unknown three-atom W state without the Bell-state measurement. Firstly, we prepare an unknown three-atom W state by the resonant interaction between the atoms and the cavity. Then a quantum channel is prepared by sending two atoms through a single-mode cavity field, and driving them by a strong classical field at the same time. During the interaction between the atoms and the cavity, the states of these atoms are evolved. After the interaction, we prepare the EPR states, which form the quantum channel. Finally, we implement the teleportation of the unknown three-atom W state using the way of preparing the quantum channel. During the teleportation, the effects of thermal field and cavity decay are all eliminated. The success probability is 1.0.