中文摘要：

本文以两个相互作用各向异性的量子比特海森堡XXZ模型为工质，构造了一个热纠缠奥托量子热机．基于量子热力学第一定律，我们推导出量子纠缠热机的输出功和效率表达式．通过数值模拟，绘出了热机效率与纠缠度之间的三维关系图．我们发现：热机效率小于卡诺效率，热力学第二定律成立；效率非零区域主要分布在C1〈C2的区域，效率的大小和非零区域随高、低温热源温度之比），的增加而增加．讨论了两种特殊种情况△=0和△=1下量子纠缠热机的效率．

英文摘要：

This paper establishes an entangled otto quantum heat engine （EQHE） working with the two-qubit ani- sotropic Heisenberg XXZ model. Based on the first law of quantum thermodynamics, we derive the expressions for the net work and the efficiency of EQHE. By numerical calculation we plot three dimensional graphics between the efficiency and the concurrence. It is found that the efficiency of the EQHE is smaller than the Carnot efficiency and the validity of the second law of thermodynamics is confirmed; The region of non-zero efficiency is mainly distributed in C1 〈 C2 and the value of efficiency and region of non-zero efficiency increase with the increase of the ratio of the temperature γ. The efficiency of the EQHE is discussed in two special eases △ = 0 and △ = 1.