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文章主要研究在有限温度下,外加磁场和DM相互作用对两比特海森堡xY模型中实现量子稠密编码的影响。通过稠密编码的信道容量表达式分析了每个参数对稠密编码的影响并且发现平均耦合常数J-,DM相互作用和各向异性参数J+对稠密编码起积极作用。均匀磁场B和非均匀磁场b对稠密编码起消极作用。
In this paper, we mainly study the effect of the applied magnetic field and the DM interaction on the quantum dense coding in the two-bit Heisenberg xY model at finite temperature. The effect of each parameter on dense coding is analyzed through the densely encoded channel capacity expression and it is found that the average coupling constant J-, the DM interaction and the anisotropy parameter J + play a positive role in dense coding. The uniform magnetic field B and the non-uniform magnetic field b have a negative effect on the dense coding.