• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >A special entangled quantum heat engine based on the two-qubit Heisenberg XX model
【24h】

A special entangled quantum heat engine based on the two-qubit Heisenberg XX model

机译：基于二比特Heisenberg XX模型的特殊纠缠量子热机

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We construct a special four-level entangled quantum Otto heat engine based on the two-qubit Heisenberg X X model, in which we assume that all the energy gaps are changed in the same ratio in the two quantum adiabatic processes. Hence during the whole cycle, the relative coupling constant k = J/B is fixed, where J and B are the coupling constant and the external magnetic field, respectively. The dependence of the basic thermodynamical quantities on the two entanglements at the end of two quantum isochoric processes with different relative coupling constants k is studied. Our results show that in the weak coupling region, i.e. k < 1, the heat engine can be operated in both areas where c_1 < c_2 and c_1 > c_2, whereas when k ≥ 1, it only operates under the condition c_1 < c_2. Here c_1 and c_2 are entanglements of the working substance when it comes into contact with hot and cold baths, respectively. Moreover, we find that the maximal work output for fixed k increases with the relative coupling constant.
机译：我们基于两个量子位的Heisenberg X X模型构造了一个特殊的四能级纠缠量子奥托热机，其中我们假定在两个量子绝热过程中所有能隙以相同的比率变化。因此，在整个周期中，相对耦合常数k = J / B是固定的，其中J和B分别是耦合常数和外部磁场。研究了具有不同相对耦合常数k的两个量子等速过程结束时基本热力学量对两个纠缠的依赖性。我们的结果表明，在弱耦合区域（即k <1）中，热机可以在c_1 c_2的两个区域中运行，而当k≥1，则仅在c_1

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号