与XY双自旋链耦合的双量子比特系统的关联性 与相干性

ACTA PHYSICA SINICA(2018)

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Abstract
研究了双量子比特系统中在具有Dzyaloshinsky-Moriya相互作用的独立X Y自旋链环境下的相干性与关联性动力学.推导出相干性与关联性的演化规律.发现在自旋链的临界点附近,当tt0时,则与量子关联完全相同;在t0时刻,量子关联突变为经典关联.
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Key words
relative entropy of quantum coherence,quantum correlation,XY spin,Dzyaloshinsky-Moriya interaction
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