Realistic teleportation of coherent states using squeezed vacuum states

This paper presents a realistic scheme for the teleportation ofcoherent states in which a two-mode squeezed vacuum state serves asthe quantum channel and the position-sum and momentum-difference oftwo local modes serve as the measuring observables. The averagefidelity of the teleportation of coherent states is derived forfinite squeezing parameters and it turns out that fidelity greaterthan 1/2 cannot be achieved by using a classical channel alone andthe probability distribution of the measurement result is a Gaussiandistribution around the unknown parameter of the input coherentstate with a width given by the squeezing parameter.