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Quantum Simulation Entanglement Theory Quantum Correlations Open Quantum Systems Decoherence

Performance boost of a collective qutrit refrigerator

arXiv

Authors: Dmytro Kolisnyk, Gernot Schaller

Year

2022

Paper ID

58385

Status

Preprint

Abstract Read

~2 min

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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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A single qutrit with transitions selectively driven by weakly-coupled reservoirs can implement one of the world's smallest refrigerators.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2210.07844 [2] arXiv https://arxiv.org/abs/2210.07844 [3] Publisher https://arxiv.org/abs/2210.07844

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