论文标题
量子电池耗散充电的集体效应和量子相干性
Collective effects and quantum coherence in dissipative charging of quantum batteries
论文作者
论文摘要
我们考虑量子电池的耗散充电过程，该量子电池的碰撞模型，其中电池通过非能源保存相互作用耦合到热浴中。首先，我们表明，对于低温，集体过程可以达到充电能力，该充电能力随电池数量而增加。我们发现的缩放是$ n^3 $，虽然比单一流程获得的界限较高，但其效率较低。然后，我们使用时间依赖的哈密顿量在能量基础上产生连贯性的单电池的耗散充电过程。在这种情况下，我们发现连贯性的存在可以提高充电能力及其效率。最后，我们展示了如何在包含充电过程的量子热发动机中使用该过程，作为其开放式中风之一。
We consider the dissipative charging process of quantum batteries in terms of a collisional model, where the batteries are coupled to a heat bath using non-energy preserving interactions. First, we show that for low temperatures the collective process can attain a charging power that increases polynomically with the number of batteries. The scaling we find is $N^3$ that, while being grater than the bound obtained for unitary processes, it has a lower efficiency. Then, we study the dissipative charging process of single battery using a time dependent Hamiltonian that generates coherences in the energy basis. In this case we find that the presence of coherence could enhance the charging power and also its efficiency. Finally, we show how this process can be used in a quantum heat engine that contains the charging process as one of its open strokes.
