Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2772
Title: Entanglement in two qubit magnetic models with dm antisymmetric anisotropic exchange interaction
Authors: Gürkan, Zeynep Nilhan
Pashaev, Oktay
Keywords: DM interaction
Entanglement
Quantum computation
SWAP gate
Quantum phase transition
Spin models
Issue Date: Mar-2010
Publisher: World Scientific Publishing Co. Pte Ltd
Source: Gürkan, Z. N., and Pashaev, O. (2010). Entanglement in two qubit magnetic models with dm antisymmetric anisotropic exchange interaction. International Journal of Modern Physics B, 24(8), 943-965. doi:10.1142/S0217979210054579
Abstract: In the present paper, an influence of the anisotropic antisymmetric exchange interaction, the DzialoshinskiiMoriya (DM) interaction, on entanglement of two qubits in various magnetic spin models, including the pure DM model and the most general XYZ model, are studied. We find that the time evolution generated by DM interaction can implement the SWAP gate and discuss realistic quasi-one-dimensional magnets where it can be realized. It is shown that inclusion of the DM interaction to any Heisenberg model creates, when it does not exist, or strengthens, when it exists, the entanglement. We give physical explanation of these results by studying the ground state of the systems at T = 0. Nonanalytic dependence of the concurrence on the DM interaction and its relation with quantum phase transition is indicated. Our results show that spin models with the DM coupling have some potential applications in quantum computations and the DM interaction could be an efficient control parameter of entanglement. © 2010 World Scientific Publishing Company.
URI: http://doi.org/10.1142/S0217979210054579
http://hdl.handle.net/11147/2772
ISSN: 0217-9792
17936578
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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