Performance boost of a collective qutrit refrigerator
- URL: http://arxiv.org/abs/2210.07844v1
- Date: Fri, 14 Oct 2022 14:14:13 GMT
- Title: Performance boost of a collective qutrit refrigerator
- Authors: Dmytro Kolisnyk and Gernot Schaller
- Abstract summary: A single qutrit with transitions selectively driven by weakly-coupled reservoirs can implement one of the world's smallest refrigerators.
We observe a quantum boost, manifest in a quadratic scaling of the steady-state cooling current with $N$.
Fine-tuned inter-qutrit interactions may be used to maintain the quantum boost for all $N$ and also for not-perfectly collective scenarios.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: 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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