Asadian M, Ahadpour S, Mirmasoudi F
Department of Physics, University of Mohaghegh Ardabili, 56199-11367, Ardabil, Iran.
Sci Rep. 2022 Apr 30;12(1):7081. doi: 10.1038/s41598-022-11146-3.
In this paper, we consider a heat engines composed of two interactional qubits with spin-orbit interaction (Dzyaloshinskii-Moriya (DM)) subject to an external magnetic field, so that each qubit is coupled with cold or hot source. One intention of this work is to investigate the following question: is it possible the effects of DM lead to improve basic thermodynamic quantities in this heat engine are coupled to local environments that are not necessarily at equilibrium? Moreover, we study whether or not quantum correlations can be helpful in the performance of quantum work engines. For this end, we investigate the effects of the temperature and the interaction rate of each qubit with its surrounding environment on quantum correlations such as quantum coherence and quantum discord and quantum entanglements, as well as the generated work. Finally we compare three quantum correlations (entanglement, discord, and coherence) with thermodynamic parameters and show that the output work is positive for what values of the magnetic field so that this cycle can be considered as a thermal machine.
在本文中，我们考虑一个由两个具有自旋轨道相互作用（Dzyaloshinskii-Moriya（DM））的相互作用量子比特组成的热机，该热机处于外部磁场中，使得每个量子比特与冷源或热源耦合。这项工作的一个目的是研究以下问题：DM效应是否有可能导致在这个与不一定处于平衡态的局部环境耦合的热机中改善基本热力学量？此外，我们研究量子关联是否有助于量子功机的性能。为此，我们研究每个量子比特与其周围环境的温度和相互作用速率对量子关联（如量子相干、量子失协和量子纠缠）以及所产生的功的影响。最后，我们将三种量子关联（纠缠、失协和相干）与热力学参数进行比较，并表明对于磁场的哪些值输出功为正，从而使得这个循环可以被视为一个热机。
