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Correlation dynamics of a qubit qutrit system in a spin-chain environment with Dzyaloshinsky Moriya interaction
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作者 杨阳 王安民 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第2期99-105,共7页
We study the dynamics of correlations for a hybrid qubit-qutrit system in an XY spin-chain environment with Dzyaloshinsky-Moriya interaction. Our discussion involves a comparative analysis of negativity, quantum disco... We study the dynamics of correlations for a hybrid qubit-qutrit system in an XY spin-chain environment with Dzyaloshinsky-Moriya interaction. Our discussion involves a comparative analysis of negativity, quantum discord, and measurement-induced disturbance. It is found that the quantum discord is optimal of the three quantum correlations to de- tect the critical point of quantum phase transition. Only when the qubit interacts with the environment, is the phenomenon of sudden transition between the classical correlation and the quantum discord observed. Moreover, the Dzyaloshinsky- Moriya interaction enhances the decay of quantum correlations. 展开更多
关键词 quantum correlation quantum discord measurement-induced disturbance dzyaloshinsky- Moriya interaction
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