# Terahertz optoelectronics of quantum rings and nanohelices

## TL;DR

This paper explores the potential of quantum rings and nanohelices in terahertz devices, demonstrating control over radiation polarization and revealing negative differential conductance in nanohelices.

## Contribution

It introduces novel proposals for using quantum rings and nanohelices in terahertz technology, including polarization control and superlattice property analysis.

## Key findings

- Control over terahertz radiation polarization in quantum rings.
- Negative differential conductance observed in nanohelices.
- Potential applications in terahertz device engineering.

## Abstract

We outline a range of proposals on using quantum rings and nanohelices for terahertz device implementations. We show that an Aharonov-Bohm quantum ring system and a double-gated quantum ring system both permit control over the polarization properties of the associated terahertz radiation. In addition, we review the superlattice properties of a mathematically similar system, that of a nanohelix in external electric fields, which reveals negative differential conductance.

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Source: https://tomesphere.com/paper/1903.07342