论文标题
基于旋转的量子奥托引擎和大量化
Spins-based Quantum Otto Engines and Majorisation
论文作者
论文摘要
探讨了大容量的概念，以表征准静态态度中量子奥托引擎的性能。对于以任意大小的自旋形式的工作物质，只要在热储层中工作培养基的规范分布在冷藏库中的规范分布中，大量化就可以使奥托发动机运行的必要条件。对于Spin-1/2通过各向异性海森堡交换相互作用与任意自旋相互作用的情况，我们提出了足够的标准，用于利用大量化关系来提取正面的工作。最后，使用主要化关系分析了量子奥托效率的局部热力学以及量子上的上限。
The concept of majorisation is explored as a tool to characterize the performance of a quantum Otto engine in the quasi-static regime. For a working substance in the form of a spin of arbitrary magnitude, majorisation yields a necessary and sufficient condition for the operation of the Otto engine, provided the canonical distribution of the working medium at the hot reservoir is majorised by its canonical distribution at the cold reservoir. For the case of a spin-1/2 interacting with an arbitrary spin via isotropic Heisenberg exchange interaction, we derive sufficient criteria for positive work extraction using the majorisation relation. Finally, local thermodynamics of spins as well as an upper bound on the quantum Otto efficiency is analyzed using the majorisation relation.
