Abstract
We investigate the problem of teleportation of a superposition coherent state via a nonmaximally entangled coherent channel. Two strategies are considered to complete the task. The first one uses entanglement concentration to purify the channel to a maximally entangled one. The second one teleports the state through the nonmaximally entangled coherent channel directly. We find that the probabilities of successful teleportation for the two strategies depend on the amplitudes of the coherent states, and the mean fidelity of teleportation using the first strategy is always less than that using the second strategy.
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