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We consider the problem of teleporting superposed coherent state usingnon-maximally entangled coherent state as quantum channel and study the effectof entanglement over quality of teleportation. We show that if maximallyentangled coherent state (MECS) used by Van Enk and Hirota [Phys. Rev. A 64,022313 (2001)] and by H Prakash et al. [Phys. Rev. A 75, 044305 (2007)] isreplaced by a particular non-maximally entangled coherent state (NMECS),average fidelity of quantum teleportation increases appreciably at smallcoherent amplitudes. Since it is very challenging to produce superposedcoherent states of large coherent amplitudes, the particular NMECS appear to bea good quantum channel for teleportation at small coherent amplitudes forpractical implementation.

Increasing Average Fidelity by Using Non-Maximally Entangled Resource in Teleportation of Superposed Coherent States