TY - JOUR
T1 - Entanglement enhances cooling in microscopic quantum refrigerators
AU - Brunner, Nicolas
AU - Huber, Marcus
AU - Linden, Noah
AU - Popescu, Sandu
AU - Silva, Ralph
AU - Skrzypczyk, Paul
PY - 2014/3/13
Y1 - 2014/3/13
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/84898949854
U2 - 10.1103/PhysRevE.89.032115
DO - 10.1103/PhysRevE.89.032115
M3 - Article
SN - 1539-3755
VL - 89
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 3
M1 - 032115
ER -