Toward terahertz heterodyne detection with superconducting Josephson nano-junctions

Details Toward terahertz heterodyne detection with superconducting Josephson nano-junctions Toward terahertz heterodyne detection with superconducting Josephson nano-junctions

2012-03-08

arxiv.org/abs/1203.1734v1

Physics

Condensed Matter

Superconductivity

Scientific paper

In this letter, we present the study of the high-frequency mixing properties of ion irradiated YBCO Josephson nano-junctions. The frequency range, spanning above and below the characteristic frequencies fc of the junctions, permits clear observation of the transition between two mixing regimes. The experimental conversion gain was found to be in good agreement with the prediction of the three ports model. Finally, we discuss the potential of the junctions to build a Josephson mixer operating in the terahertz frequency range.

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