Quantum heat engine based on photon-assisted Cooper pair tunneling
Autor: | Hofer, Patrick P., Souquet, J. -R., Clerk, Aashish A. |
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Rok vydání: | 2015 |
Předmět: | |
Zdroj: | Phys. Rev. B 93, 041418 (2016) |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevB.93.041418 |
Popis: | We propose and analyze a simple mesoscopic quantum heat engine that exhibits both high-power and high-efficiency. The system consists of a biased Josephson junction coupled to two microwave cavities, with each cavity coupled to a thermal bath. Resonant Cooper pair tunneling occurs with the exchange of photons between cavities, and a temperature difference between the baths can naturally lead to a current against the voltage, and hence work. As a consequence of the unique properties of Cooper-pair tunneling, the heat current is completely separated from the charge current. This combined with the strong energy-selectivity of the process leads to an extremely high efficiency. Comment: Published version. Main text: 5 pages, 3 figures; Supplement: 1 page |
Databáze: | arXiv |
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