Bipartite Entanglement Dynamics in Three Qubits System with Dzyaloshinskii–Moriya Interaction
Qiang Zheng, Sun Ping, Xiaoping Zhang, Ren Zhong-Zhou · Communications in Theoretical Physics · 2010
We investigate the bipartite entanglement dynamics of the system composed by three qubits A, B, and C. There is no interaction between A and B, and that of C and B is Dzyaloshinskii–Moriya (DM) spin-orbit interaction. We find that the purity of qubits A and B and the initial state of the qubit C are the two effective parameters to control the entanglement dynamics of the bipartite subsystems. This study sheds some lights on the control of quantum entanglement, which would be helpful for quantum information processing.