论文标题
量子热力学,快速驾驶和通过介观铅接近强耦合
Quantum thermodynamics with fast driving and strong coupling via the mesoscopic leads approach
论文作者
论文摘要
了解与热浴的驱动量子系统的热力学是量子热力学和介观物理学的主要重点。文献中存在各种不同的方法论方法,它们都具有自己的优势和缺点。最近将介观铅方法推广到稳态热机,并具有在非相互作用极限中复制LandauerBüttiker理论的能力。在这种方法中,每种局部抑制的一组离散的铅模式为浴室提供了马尔可夫嵌入。在这项工作中,我们进一步概括了这种方法,以将任意时间依赖性纳入哈密顿量。经过仔细讨论热力学量的计算,我们通过研究几个驱动的介质示例与有限温度效率的效率浴缸,以各种限制复制已知结果,从而说明了方法的功能。在驱动的非相互作用量子点的情况下,我们显示了如何使用速度驱动来诱导热矫正。
Understanding the thermodynamics of driven quantum systems strongly coupled to thermal baths is a central focus of quantum thermodynamics and mesoscopic physics. A variety of different methodological approaches exist in the literature, all with their own advantages and disadvantages. The mesoscopic leads approach was recently generalised to steady state thermal machines and has the ability to replicate Landauer Büttiker theory in the non-interacting limit. In this approach a set of discretised lead modes, each locally damped, provide a markovian embedding for the baths. In this work we further generalise this approach to incorporate an arbitrary time dependence in the system Hamiltonian. Following a careful discussion of the calculation of thermodynamic quantities we illustrate the power of our approach by studying several driven mesoscopic examples coupled to finite temperature fermionic baths, replicating known results in various limits. In the case of a driven non interacting quantum dot we show how fast driving can be used to induce heat rectification.