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Various Correlations in the Anisotropic Heisenberg XYZ Model with Dzyaloshinski–Moriya Interaction |
TURSUN Mamtimin, ABLIZ Ahmad**, MAMTIMIN Rabigul, ABLIZ Ablimit, QIAO Pan-Pan |
School of Physics and Electronic Engineering, Xinjiang Normal University, Urumchi 830054 |
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Cite this article: |
TURSUN Mamtimin, ABLIZ Ahmad, MAMTIMIN Rabigul et al 2013 Chin. Phys. Lett. 30 030303 |
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Abstract Various thermal correlations as well as the effect of intrinsic decoherence on the correlations are studied in a two-qubit Heisenberg XYZ spin chain with the Dzyaloshinski–Moriya (DM) interaction along the z direction, i.e. Dz. It is found that tunable parameter Dz may play a constructive role on the concurrence C, classical correlation (CC) and quantum discord (QD) in thermal equilibrium while it plays a destructive role on the correlations in the intrinsic decoherence case. The entanglement and quantum discord exhibit collapse and revival under the phase decoherence. With a proper combination of the system parameters, the correlations can effectively be kept at high steady state values despite the intrinsic decoherence.
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Received: 13 September 2012
Published: 29 March 2013
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PACS: |
03.65.Ud
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(Entanglement and quantum nonlocality)
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03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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75.10.Pq
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(Spin chain models)
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Abstract
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