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Quantum Discord of a Two-Qubit Anisotropy XXZ Heisenberg Chain with Dzyaloshinskii-Moriya Interaction
Mathematics Department, Faculty of Science, Sohag University, Sohag, Egypt
- 1 Mathematics Department, Faculty of Science, Sohag University, Sohag, Egypt
Journal of Quantum Information Science·Volume 04 (2014)·Pages 104–110·Published 20 May 2014·DOI10.4236/jqis.2014.42011
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Abstract
We investigate the quantum discord of a two-qubit anisotropy XXZ Heisenberg chain with Dzyaloshinskii-Moriya ( DM ) interaction under magnetic field. It is shown that the quantum discord highly depends on the system’s temperature T , DM interaction D , homogenous magnetic field B and the anisotropy Δ. For lower temperature T , by modulating D and B , the quantum discord can be controlled and the quantum discord switch can be realized.
KeywordsQuantum DiscordHeisenberg ChainDzyaloshinskii-Moriya InteractionAnisotropyMagnetic Field
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