Cooling by Cooper pair splitting

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openAccess

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2018-12-28

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en

Pages

4
1-6

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Physical Review B, Volume 98, issue 24

Abstract

The electrons forming a Cooper pair in a superconductor can be spatially separated preserving their spin entanglement by means of quantum dots coupled to both the superconductor and independent normal leads. We investigate the thermoelectric properties of such a Cooper pair splitter and demonstrate that cooling of a reservoir is an indication of nonlocal correlations induced by the entangled electron pairs. Moreover, we show that the device can be operated as a nonlocal thermoelectric heat engine. Both as a refrigerator and as a heat engine, the Cooper pair splitter reaches efficiencies close to the thermodynamic bounds. As such, our work introduces an experimentally accessible heat engine and a refrigerator driven by entangled electron pairs in which the role of quantum correlations can be tested.

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| openaire: EC/H2020/743884/EU//DiracEntangler

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Citation

Sanchez, R, Burset Atienza, P & Levy Yeyati, A 2018, ' Cooling by Cooper pair splitting ', Physical Review B, vol. 98, no. 24, 241414, pp. 1-6 . https://doi.org/10.1103/PhysRevB.98.241414