Entanglement enhances cooling in microscopic quantum refrigerators

Nicolas Brunner, Marcus Huber, Noah Linden, Sandu Popescu, Ralph Silva, Paul Skrzypczyk

Research output: Contribution to journalArticleResearchpeer-review

99 Citations (Scopus)

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. © 2014 American Physical Society.
Original languageEnglish
Article number032115
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume89
Issue number3
DOIs
Publication statusPublished - 13 Mar 2014

Fingerprint Dive into the research topics of 'Entanglement enhances cooling in microscopic quantum refrigerators'. Together they form a unique fingerprint.

Cite this