Tailoring photon emission patterns in nanostructures

TL;DR

This paper presents a symmetry-based approach to control photon emission patterns in coupled quantum dots, enabling the design of nanostructures with specific harmonic emission properties for advanced optical devices.

Contribution

Introduces a new theorem linking symmetry in time and spectrum domains to emission patterns, allowing tailored photon emission in nanostructures.

Findings

Achieved emission spectra with only odd harmonics

Obtained spectra with only even harmonics

Demonstrated quenching of all emission components

Abstract

We investigate the photon emission in coupled quantum dots based on symmetry considerations. With the help of a new theorem we proved, we reveal the origin of the various emission patterns, which is the combinative symmetry in the time domain and spectrum domain. We are able to tailor the emission patterns and obtain emission spectra with odd harmonics only, even harmonics only, both odd and even harmonic components, or even the quenching of all components. These interesting emission patterns can be obtained in experiments by careful design of the nanostructures, which are of many applications in optical-electric nanodevices.