论文标题
通过重复与大型自旋相互作用来增强单个量子电池的量子
Quantum enhancement of a single quantum battery by repeated interactions with large spins
论文作者
论文摘要
开发了一种广义碰撞模型，以调查连贯的单个量子电池通过与许多原子大型旋转的相互作用，在该旋转中采用了集体原子操作员，并且电池由均匀的能量梯子建模。对于最初的空电池，我们得出了平均激发次数的分析结果，因此在短时限制中获得了充电功率。我们的分析结果表明，相干协议中更快的充电和增加的功率是由原子的相相一致性引起的。最后，我们表明，由于电池在短时间内的电池状态几乎纯净的状态，所谓的麦角综合征定义的充电能力几乎遵循了我们的分析结果。
A generalized collision model is developed to investigate coherent charging a single quantum battery by repeated interactions with many-atom large spins, where collective atom operators are adopted and the battery is modeled by a uniform energy ladder. For an initially empty battery, we derive analytical results of the average number of excitations and hence the charging power in the short-time limit. Our analytical results show that a faster charging and an increased amount of the power in the coherent protocol uniquely arise from the phase coherence of the atoms. Finally, we show that the charging power defined by the so-called ergotropy almost follows our analytical result, due to a nearly pure state of the battery in the short-time limit.
