Resonator coupled Josephson junctions; parametric excitations and mutual locking

H. Dalsgaard Jensen, A. Larsen, Jesper Mygind

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Self-pumped parametric excitations and mutual locking in systems of Josephson tunnel junctions coupled to multimode resonators are reported. For the very large values of the coupling parameter, obtained with small Nb-Al2O3-Nb junctions integrated in superconducting microstrip resonators, the DC I-V characteristic shows an equidistant series of current steps generated by subharmonic pumping of the fundamental resonator mode. This is confirmed by measurement of frequency and linewidth of the emitted Josephson radiation
Original languageEnglish
JournalI E E E Transactions on Magnetics
Issue number2, 4
Pages (from-to)3355-3358
Publication statusPublished - 1991

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