Bridging the Terahertz gap for chaotic sources with superconducting junctions

TL;DR

This paper reports the first experimental observation of broadband chaotic Terahertz radiation emitted from a superconducting junction, highlighting its potential for advanced communication and spectroscopy applications.

Contribution

It demonstrates the generation of high-frequency chaotic signals from superconducting systems within the Terahertz gap, confirmed by numerical modeling.

Findings

Broadband chaotic signal reaching 0.7 THz emitted from superconducting junction.

First experimental observation of chaotic Terahertz emission from superconductors.

Potential applications in chaos-based Terahertz communication and spectroscopy.

Abstract

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. To our knowledge, this is the first experimental observation of a high-frequency chaotic signal emitted by a superconducting system which lies inside the Terahertz gap. Our experimental finding is fully confirmed by the numerical modeling based on the microscopic theory and reveals the unrealized potential of superconducting systems in chaos-based Terahertz communication, fast generation of true random numbers and non-invasive Terahertz spectroscopy applicable to physical, chemical and biological systems.