Quantum teleportation protocol for an arbitrary N-state

In this thesis, a practical quantum teleportation protocol for an arbitrary N-qubit state is proposed. In the proposed protocol sender and receiver share a maximall entangled state in advance. After sender interacts the state she wants to teleport with the qubits of her share in the entangled state, a joint state is obtained. This joint state is written in such a way that the qubits in senders' and receivers' possession are separated and these states are re-arraned 4N times using single-qubit gates (Z and X only). A method is developed using set theory to determine the series of these single-qubit gates to be used in rearrangement of the states in the joint state. With the protocol we propose, one can faithfully teleport an arbitrary N-qubit state from one location to another. As an example we studied the teleportation protocol for an arbitrary two and three-qubit states.