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Emission of non-classical radiation by inelastic Cooper pair tunneling

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arxiv 1703.05009 v1 pith:SMV75IHJ submitted 2017-03-15 cond-mat.mes-hall cond-mat.supr-conquant-ph

Emission of non-classical radiation by inelastic Cooper pair tunneling

M. Westig , B. Kubala (ITP) , O. Parlavecchio , Y. Mukharsky , C. Altimiras , P Joyez , D. Vion , P. Roche
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M. Hofheinz D Esteve M Trif P. Simon J. Ankerhold (ITP) F. Portier
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classification cond-mat.mes-hall cond-mat.supr-conquant-ph
keywords emissionresonatorsmicrowavenon-classicalpairsphotonagreementamplitude
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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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