标题： 量子点热电引擎中的当前噪声 显示英文标题

标题： Current noise in quantum dot thermoelectric engines

摘要： 我们理论研究了一个基于单能级量子点的热电热机，计算了平均量，如电流、热量流、输出功率和效率，以及波动（噪声）。 我们的理论基于记忆核的图解展开结合计数统计，并我们研究了强相互作用和次主导阶跃隧穿的影响。 考虑次主导阶跃隧穿在高功率和高效率运行时对于正确描述至关重要，并且特别影响Fano因子和效率的定性行为。 我们将结果与所谓的热力学不确定性关系进行比较，这些关系为给定效率提供了波动的下限。 原则上，传统的热力学不确定性关系可能被来自次主导阶跃隧穿的非马尔可夫量子效应所违反，从而提供一种量子优势。 然而，对于我们在此考虑的具体热机实现，我们发现次主导阶跃隧穿不会导致这种违反，而是实际上总是使结果远离由热力学不确定性关系设定的界限。 显示英文摘要

摘要： We theoretically investigate a thermoelectric heat engine based on a single-level quantum dot, calculating average quantities such as current, heat current, output power, and efficiency, as well as fluctuations (noise). Our theory is based on a diagrammatic expansion of the memory kernel together with counting statistics, and we investigate the effects of strong interactions and next-to-leading order tunneling. Accounting for next-to-leading order tunneling is crucial for a correct description when operating at high power and high efficiency, and in particular affect the qualitative behavior of the Fano factor and efficiency. We compare our results with the so-called thermodynamic uncertainty relations, which provide a lower bound on the fluctuations for a given efficiency. In principle, the conventional thermodynamic uncertainty relations can be violated by the non-Markovian quantum effects originating from next-to-leading order tunneling, providing a type of quantum advantage. However, for the specific heat engine realization we consider here, we find that next-to-leading order tunneling does not lead to such violations, but in fact always pushes the results further away from the bound set by the thermodynamic uncertainty relations.