Abstract:
The work of a single element of the device consisting of two galvanically isolated superconducting NbN nanowires in different layers, into one of which a resistance of $\sim$1.2 k$\Omega$ is integrated at the point of their intersection, is demonstrated. The device actuation (output voltage generation) occurs due to contactless local heating of the superconductor by heat released in the resistive section of the nanowire in the adjacent layer through the separating dielectric layer. In liquid helium (4.2 K), pulse and sinusoidal RF signals, as well as sinusoidal microwave signals at frequencies of 1, 4 and 9 GHz, were fed to the device. It was found that when a pulse RF signal is fed, the response speed of the contactless inverter corresponds to a frequency of $\sim$0.83 GHz; when a sinusoidal signal of 100 MHz is fed, a periodic signal of double frequency appears at the output; When a microwave signal is applied, peaks at double the frequency (2, 8 and 18 GHz) are observed on the frequency spectrum, which indicates the possibility of the device operating at frequencies up to 18 GHz.
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