Resonance fluorescence from a coherently driven semiconductor quantum dot in a cavity

TL;DR

This paper demonstrates resonance fluorescence from a coherently driven semiconductor quantum dot embedded in a micro-cavity, showing non-classical light emission and Mollow triplet features through interferometry and correlation measurements.

Contribution

It provides the first experimental realization of resonance fluorescence in a semiconductor quantum dot within a micro-cavity, including detailed characterization of the emission regimes.

Findings

Observation of Mollow triplet with Rabi splitting up to 13.3 micro eV

Detection of non-classical light via second-order correlation

Identification of transition from weak to strong excitation regimes

Abstract

We show that resonance fluorescence, i.e. the resonant emission of a coherently driven two-level system, can be realized with a semiconductor quantum dot. The dot is embedded in a planar optical micro-cavity and excited in a wave-guide mode so as to discriminate its emission from residual laser scattering. The transition from the weak to the strong excitation regime is characterized by the emergence of oscillations in the first-order correlation function of the fluorescence, g(t), as measured by interferometry. The measurements correspond to a Mollow triplet with a Rabi splitting of up to 13.3 micro eV. Second-order-correlation measurements further confirm non-classical light emission.