The quantum correlation of anisotropic Heisenberg spin chain under the control of inhomogeneous magnetic field

作者：Li, W. D.^*; Wen, S. J.; Ji, Y. H.

来源：Optik, 2014, 125(21): 6500-6504.

DOI：10.1016/j.ijleo.2014.08.035

• Heisenberg spins chain
• Inhomogeneous magnetic field
• Dzyaloshinskii-Moriya interaction
• Quantum entanglement
• Quantum discord

The quantum correlation (quantum entanglement and quantum discord)'s dynamical behavior characteristics of Heisenberg XXZ spin chain with Dzyaloshinskii-Moriya (DM) interaction heterogeneous magnetic field that manipulated by sinusoidal wave are investigated in this paper. The results indicate that quantum correlation of anisotropic Heisenberg XXZ spin chain can be regulated effectively by magnetic field intensity B and magnetic field uniformity cos theta of the external magnetic field. Under the effects of DM interaction in qubits, the quantum correlation's dynamics evolution process appears sudden death and birth. But DM interaction has a critical value D-CZ which is connected with other quantum correlation versus parameters. Only when Dz >= DCZ, sudden death and birth can be obviously observed under the rest given parameters.

• 出版日期2014
• 单位江西师范大学