Chinese Journal of Quantum Electronics, Volume. 29, Issue 4, 434(2012)

Effect of different inhomogeneous magnetic fields on thermal entanglement in a two-qutrit Heisenberg XYZ chain

Meng QIN*... Yan-biao LI and Zhong BAI |Show fewer author(s)
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    The quantum entanglement of two-qutrit Heisenberg XYZ chains interacting with different inhomogeneous magnetic fields is investigated by means of negativity. It is found that the quantum phase transition occurs when the system is in the ground state. The behaviors of entanglement in ferromagnetic and anti-ferromagnetic are totally different. So, entanglement can be produced by this feature. It’s also found that the entanglement behaves oscillator when the external magnetic field becomes inhomogeneous. And the x and y component magnetic fields can induce the entanglement to disappear and then to revive. The dependence of the entanglement on parameters varies with different magnetic fields. The entanglement can be controlled by adjusting the directions of external magnetic field and the anisotropy couplings Jz.

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    QIN Meng, LI Yan-biao, BAI Zhong. Effect of different inhomogeneous magnetic fields on thermal entanglement in a two-qutrit Heisenberg XYZ chain[J]. Chinese Journal of Quantum Electronics, 2012, 29(4): 434

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    Paper Information

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    Received: Jul. 4, 2011

    Accepted: --

    Published Online: Oct. 8, 2012

    The Author Email: Meng QIN (qrainm@gmail.com)

    DOI:10.3969/j.issn.1007-5461. 2012.04.009

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