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We study the efficacy of two-qubit mixed entangled states as resources forquantum teleportation. We first consider two maximally entangled mixed states,viz., the Werner state\cite{werner}, and a class of states introduced by Munro{\it et al.} \cite{munro}. We show that the Werner state when used asteleportation channel, gives rise to better average teleportation fidelitycompared to the latter class of states for any finite value of mixedness. Wethen introduce a non-maximally entangled mixed state obtained as a convexcombination of a two-qubit entangled mixed state and a two-qubit separablemixed state. It is shown that such a teleportation channel can outperformanother non-maximally entangled channed, viz., the Werner derivative for acertain range of mixedness. Further, there exists a range of parameter valueswhere the former state satisfies a Bell-CHSH type inequality and still performsbetter as a teleportation channel compared to the Werner derivative even thoughthe latter violates the inequality.

Teleportation via maximally and non-maximally entangled mixed states