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arXiv · 1512.02165

Quantum heat engine based on photon-assisted Cooper pair tunneling

Patrick P. Hofer·J. -R. Souquet·Aashish A. Clerk
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Abstract

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.

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Patrick P. Hofer, J. -R. Souquet, Aashish A. Clerk. 2015-12-07. Quantum heat engine based on photon-assisted Cooper pair tunneling. https://doi.org/10.1103/physrevb.93.041418

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