Entanglement fidelity of the standard quantum teleportation channel
  We consider the standard quantum teleportation protocol where a general bipartite state is used as entanglement resource. We use the entanglement fidelity to describe how well the standard quantum teleportation channel transmits quantum entanglement and give a simple expression for the entanglement fidelity when it is averaged on all input states. 
Gang Li, Ming-Yong Ye, Xiu-Min Lin
quant-ph