The quantum correlation of anisotropic Heisenberg spin chain under the control of inhomogeneous magnetic field |
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Authors: | WD Li SJ Wen YH Ji |
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Institution: | 1. Department of Physics, Jiangxi Normal University, Nanchang, Jiangxi 330022, China;2. Key Laboratory of Photoelectronics and Telecommunication of Jiangxi Province, Nanchang, Jiangxi 330022, China |
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Abstract: | 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 θ 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 DCZ 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. |
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Keywords: | Heisenberg spins chain Inhomogeneous magnetic field Dzyaloshinskii&ndash Moriya interaction Quantum entanglement Quantum discord |
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