Resonance fluorescence from an asymmetric quantum dot dressed by a bichromatic electromagnetic field

TL;DR

This paper develops a theoretical framework for resonance fluorescence in asymmetric quantum dots driven by a bichromatic electromagnetic field, revealing novel phenomena like multiple Mollow triplets and fluorescence quenching.

Contribution

It introduces a new theory describing how broken symmetry and bichromatic driving lead to unexpected fluorescence features in quantum dots.

Findings

Infinite set of Mollow triplets observed.

Fluorescence peaks can be quenched by the dressing field.

Fluorescence intensity oscillates with dressing field amplitude.

Abstract

We present the theory of resonance fluorescence from an asymmetric quantum dot driven by a two-component electromagnetic field with two different frequencies, polarizations and amplitudes (bichromatic field) in the regime of strong light-matter coupling. It follows from the elaborated theory that the broken inversion symmetry of the driven quantum system and the bichromatic structure of the driving field result in unexpected features of the resonance fluorescence, including the infinite set of Mollow triplets, the quench of fluorescence peaks induced by the dressing field, and the oscillating behavior of the fluorescence intensity as a function of the dressing field amplitude. These quantum phenomena are of general physical nature and, therefore, can take place in various double-driven quantum systems with broken inversion symmetry.