Thermal effects on the resonance fluorescence of doubly dressed artificial atoms

TL;DR

This study examines how phonon dissipation affects the resonance fluorescence of doubly dressed artificial atoms, revealing that phonon decoherence has modest impact up to 30 K, enabling practical optical switching at relatively higher temperatures.

Contribution

It provides a detailed analysis of phonon effects on doubly driven artificial atoms using perturbative and polaron methods, demonstrating robustness of emission properties at accessible temperatures.

Findings

Phonon decoherence effects are modest up to ~30 K.

Optical switching via double dressing does not require ultra-low temperatures.

Emission spectra remain close to Fourier transform limit despite phonon interactions.

Abstract

In this work, robustness of controlled density of optical states in doubly driven artificial atoms is studied under phonon dissipation. By using both perturbative and polaron approaches, we investigate the influence of carrier-phonon interactions on the emission properties of a two-level solid-state emitter, simultaneously coupled to two intense distinguishable lasers. Phonon decoherence effects on the emission spectra are found modest up to neon boiling temperatures ($\sim 30$ K), as compared with photon generation at the Fourier transform limit obtained in absence of lattice vibrations (zero temperature). These results show that optical switching and photonic modulation by means of double dressing, do not require ultra low temperatures for implementation, thus boosting its potential technological applications.