Entanglement fidelity of coherent-state teleportation with asymmetric quantum channel

July, 14 (2005) at 11am

Alexei Chizhov
Joint Institute for Nuclear Research, Dubna, Russia

A strategy for teleporting coherent states with the entanglement fidelity is considered in the general case of an asymmetric teleportation scheme. The mixed teleportation channel is associated with absorption losses in the modes transmission of the two-mode squeezed vacuum state along the paths to the sending and receiving stations. It is shown that the non-balanced homodyne detection with the subsequent coherent displacement is required to provide the average teleportation fidelity of entanglement.