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Entanglement enhances cooling in microscopic quantum refrigerators

Linden, Noah
Popescu, Sandu
Skrzypczyk, Paul
Published in Physical Review. E. 2014, vol. 89, no. 3
Abstract Small self-contained quantum thermal machines function without external source of work or control but using only incoherent interactions with thermal baths. Here we investigate the role of entanglement in a small self-contained quantum refrigerator. We first show that entanglement is detrimental as far as efficiency is concerned—fridges operating at efficiencies close to the Carnot limit do not feature any entanglement. Moving away from the Carnot regime, we show that entanglement can enhance cooling and energy transport. Hence, a truly quantum refrigerator can outperform a classical one. Furthermore, the amount of entanglement alone quantifies the enhancement in cooling.
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BRUNNER, Nicolas et al. Entanglement enhances cooling in microscopic quantum refrigerators. In: Physical Review. E, 2014, vol. 89, n° 3. doi: 10.1103/PhysRevE.89.032115 https://archive-ouverte.unige.ch/unige:36408

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Deposited on : 2014-05-06

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