论文标题
最佳的线性循环量子加热发动机不能从强耦合中受益
Optimal linear cyclic quantum heat engines cannot benefit from strong coupling
论文作者
论文摘要
揭示强大的系统浴耦合是否可以成为能源转化的有利操作资源，可以促进有效的量子热发动机（QHES）的发展。然而，由于治疗牢固的耦合所带来的挑战，对这场持续的辩论的共识仍然缺乏。在这里，我们通过揭示强系统浴耦合在其最佳操作中的有害作用，结论在较小的温度差下进行的最佳线性循环QHS的辩论。我们在分析上证明，强效率线性循环QHES的最大效率和最大效率都受到其弱耦合对应物的上限，尤其是相对于在较强的时间逆向对称性破裂的情况下，相对于Carnot限制的二次抑制。
Uncovering whether strong system-bath coupling can be an advantageous operation resource for energy conversion can facilitate the development of efficient quantum heat engines (QHEs). Yet, a consensus on this ongoing debate is still lacking owing to challenges arising from treating strong couplings. Here we conclude the debate for optimal linear cyclic QHEs operated under a small temperature difference by revealing the detrimental role of strong system-bath coupling in their optimal operations. We analytically demonstrate that both the efficiency at maximum power and maximum efficiency of strong-coupling linear cyclic QHEs are upper bounded by their weak-coupling counterparts and, particularly, experience a quadratic suppression relative to the Carnot limit under strong time-reversal symmetry breaking.
