论文标题
效率大偏差函数的量子热发动机
Efficiency large deviation function of quantum heat engines
论文作者
论文摘要
小型热机的效率通常是波动的数量。我们在这里研究了两个示例性量子热发动机，谐波振荡器和两级奥托周期的效率大偏差函数。而效率统计数据遵循Verley等人的“通用”理论。 [自然社区。 5，4721（2014）]对于非绝热驾驶，我们发现后一个框架不适用于绝热制度。我们将这种不寻常的特性与一般发生在工作输出和热量输入之间的完美反相关之间 广泛的量表不变的绝热量子奥托热发动机并抑制热和量子波动。
The efficiency of small thermal machines is typically a fluctuating quantity. We here study the efficiency large deviation function of two exemplary quantum heat engines, the harmonic oscillator and the two-level Otto cycles. While the efficiency statistics follows the 'universal' theory of Verley et al. [Nature Commun. 5, 4721 (2014)] for nonadiabatic driving, we find that the latter framework does not apply in the adiabatic regime. We relate this unusual property to the perfect anticorrelation between work output and heat input that generically occurs in the broad class of scale-invariant adiabatic quantum Otto heat engines and suppresses thermal as well as quantum fluctuations.
