Minimal Self-Contained Quantum Refrigeration Machine Based on Four Quantum Dots

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D. Venturelli, R. Fazio, and V. Giovannetti


Phys. Rev. Lett. 110, 256801 (2013)

We present a theoretical study of an electronic quantum refrigerator based on four quantum dots arranged in a square configuration, in contact with as many thermal reservoirs. We show that the system implements the minimal mechanism for acting as a self-contained quantum refrigerator, by demonstrating heat extraction from the coldest reservoir and the cooling of the nearby quantum dot.