Degeneracy removal of the left and right quantum discord in an inhomogeneous magnetic field

Abstract

The effects of the inhomogeneous magnetic field on the quantum discord of the thermal state of a two-qubit isotropic Heisenberg system is investigated. The results show that the inhomogeneity of the magnetic field could remove the degeneracy of the left and right quantum discord. The results of this paper are important for the process of quantum state preparation