One-third (period three) harmonic generation in microwave-driven Josephson tunnel junctions

Hansen, J. Bindslev; Clarke, J.; Mygind, J.; Ovsyannikov, G. A.; Svensmark, H.
December 1986
Applied Physics Letters;12/22/1986, Vol. 49 Issue 25, p1744
Academic Journal
One-third harmonic signals have been generated in the zero voltage state of a Josephson tunnel junction driven with a microwave current in the frequency range 8–20 GHz. The signal was as much as 50 dB above the noise level of the detector with a linewidth of less than 100 Hz. The junction parameters and microwave current were measured in situ in separate experiments. The subharmonic generation occurred for ranges of microwave current and frequency that were in reasonable agreement with the results of digital computer simulations.


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