Experimental realization of two qubit teleportation and four bit dense coding

Quantum teleportation and dense coding are quantum tasks in which an unknown quantum state sends from one location to another in first one and a classical bits sends between two locations in the later. We introduce a quantum circuit for creating generalized Bell states discussed by Gustavo Rigolin (PRA 71, 032303 (2005)). We develop appropriate quantum circuit for realizing two qubits teleportation and four bits dense coding. We experimentally demonstrate these circuits in IBM quantum computer and calculate fidelity of teleportation and efficiency of dense coding.