Quantum teleportation and thermal entanglement of two-scattering qubit state in graphene lattices

This paper presents an analytical investigation of the teleportation and the thermal entanglement of two identical qubits in the ground state of graphene lattices. The elastic interaction between the two qubits is considered as a scattering process. The modified Hamiltonian and density matrix of the system were presented. The teleportation and the entanglement of two-qubit system are analyzed through the study of the average fidelity of teleportation F-A, the concurrence C and the entanglement. of formation epsilon(f). The results depend on the temperature T and also on the parameters of the system as the chi parameter of the interaction potential and gamma band parameter. The study shows that the teleportation and the entanglement decrease when the temperature T increases but they become all the more important as the parameters chi and gamma increase.