Cooling by Cooper pair splitting

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2018-12-28
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Mcode
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Language
en
Pages
4
1-6
Series
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.
Description
| 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