论文标题

集体QUTRIT冰箱的性能提升

Performance boost of a collective qutrit refrigerator

论文作者

Kolisnyk, Dmytro, Schaller, Gernot

论文摘要

由弱耦合的储层选择性驱动的具有过渡的单一QUTRIT可以实施世界上最小的冰箱之一。我们分析了$ n $ $ n $的冰箱的性能,这些冰箱集体与水库相结合。我们观察到量子提升,以$ n $的稳态冷却电流的二次缩放表现出来。随着$ n $的进一步增长,由于负责量子提升的过渡在能量上变得不利,因此缩放率会减少到线性。微调的Qutrit互动可用于维持所有$ n $的量子提升,也可以用于不完美的集体场景。

A single qutrit with transitions selectively driven by weakly-coupled reservoirs can implement one of the world's smallest refrigerators. We analyze the performance of $N$ such fridges that are collectively coupled to the reservoirs. We observe a quantum boost, manifest in a quadratic scaling of the steady-state cooling current with $N$. As $N$ grows further, the scaling reduces to linear, since the transitions responsible for the quantum boost become energetically unfavorable. Fine-tuned inter-qutrit interactions may be used to maintain the quantum boost for all $N$ and also for not-perfectly collective scenarios.

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