Quantum heat engine based on photon-assisted Cooper pair tunneling

Autor:	Hofer, Patrick P., Souquet, J. -R., Clerk, Aashish A.
Rok vydání:	2015
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Quantum Physics
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
Externí odkaz:	http://arxiv.org/abs/1512.02165 Zobrazit plný text záznamu View this record from Arxiv