The controlled teleportation of an arbitrary two-atom entangled state in driven cavity QED

Abstract

In this paper, we propose a scheme for the controlled teleportation of an arbitrary two-atom entangled state $|\varphi {>}_{12}=a|gg{>}_{12}+b|ge{>}_{12}+c|eg{>}_{12}+d|ee{>}_{12}$ in driven cavity QED. An arbitrary two-atom entangled state can be teleported perfectly with the help of the cooperation of the third side by constructing a three-atom GHZ entangled state as the controlled channel. This scheme does not involve apparent (or direct) Bell-state measurement and is insensitive to the cavity decay and the thermal field. The probability of the success in our scheme is 1.0.

10 pages

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