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arXiv · 1703.05009

Emission of non-classical radiation by inelastic Cooper pair tunneling

M. Westig·B. Kubala·O. Parlavecchio·Y. Mukharsky·C. Altimiras·P Joyez·D. Vion·P. Roche·M. Hofheinz·D Esteve·M Trif·P. Simon·J. Ankerhold·F. Portier
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Abstract

We show that a properly dc-biased Josephson junction in series with two microwave resonators of different frequencies emits photon pairs in the resonators. By measuring auto- and inter-correlations of the power leaking out of the resonators, we demonstrate two-mode amplitude squeezing below the classical limit. This non-classical microwave light emission is found to be in quantitative agreement with our theoretical predictions, up to an emission rate of 2 billion photon pairs per second.

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M. Westig, B. Kubala, O. Parlavecchio, Y. Mukharsky, C. Altimiras, P Joyez, D. Vion, P. Roche, M. Hofheinz, D Esteve, M Trif, P. Simon, J. Ankerhold, F. Portier. 2017-03-15. Emission of non-classical radiation by inelastic Cooper pair tunneling. https://doi.org/10.1103/physrevlett.119.137001

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