Abstract-Bridging the terahertz gap for chaotic sources with superconducting junctions

D. R. Gulevich, V. P. Koshelets, and F. V. Kusmartsev

https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.060501

We observe a broadband chaotic signal of terahertz frequency emitted from a superconducting junction. The generated radiation has a wide spectrum reaching 0.7 THz and power sufficient to drive on-chip circuit elements. Our experimental finding is fully confirmed by numerical modeling based on microscopic theory and reveals the unrealized potential of superconducting systems in chaos-based terahertz communication, fast generation of true random numbers, and noninvasive terahertz spectroscopy.

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