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y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.
参考文献
| [1] | Bender CM.;Meister BK.;Brody DC. .Quantum mechanical Carnot engine[J].Journal of Physics.A.Mathematical and General:A Europhysics Journal,2000(24):4427-4436. |
| [2] | Zhang GF .Entangled quantum heat engines based on two two-spin systems with Dzyaloshinski-Moriya anisotropic antisymmetric interaction[J].The European physical journal, D. Atomic, molecular, and optical physics,2008(1):123-128. |
| [3] | He, J.-Z.;He, X.;Zheng, J. .Thermal Entangled Quantum Heat Engine Working with a Three-Qubit Heisenberg XX Model[J].International Journal of Theoretical Physics: A Journal of Original Research and Reviews in Theoretical Physics and Related Mathematics, Dedicated to the Unification of Physics,2012(7):2066-2076. |
| [4] | Wootters WK. .Entanglement of formation of an arbitrary state of two qubits[J].Physical review letters,1998(10):2245-2248. |
| [5] | Wang XG. .Effects of anisotropy on thermal entanglement[J].Physics Letters, A,2001(2/3):101-104. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%