Cooper pairs in superconductors are a natural source of non-local electron entanglement. We show that when the two electrons from a pair are split into different reservoirs, the heat flow between the reservoirs can be reverted. A Cooper pair splitter device thus becomes a quantum refrigerator. The process can be also used to define a non-local thermoelectric power generator. In both cases, the system can perform at high efficiencies. This is ultimately possible due to the quantum correlations of the entangled pair. Our proposal thus constitutes an experimentally accessible proposal of an autonomous entanglement-based quantum heat engine, able to optimally extract thermodynamic work from quantum many body states [1].

[1] R. Sánchez, P. Burset and A. Levy Yeyati, Phys. Rev. B (Rapid Communications) 98, 241414 (2018).