Observation of dressed excitonic states in a single quantum dot

Abstract

We report the observation of dressed states of a quantum dot. The optically excited exciton and biexciton states of the quantum dot are coupled by a strong laser field and the resulting spectral signatures are measured using differential transmission of a probe field. We demonstrate that the anisotropic electron-hole exchange interaction induced splitting between the x- and y-polarized excitonic states can be completely erased by using the AC-Stark effect induced by the coupling field, without causing any appreciable broadening of the spectral lines. We also show that by varying the polarization and strength of a resonant coupling field, we can effectively change the polarization-axis of the quantum dot.

References in corpus (2)

• Resonance fluorescence from a coherently driven semiconductor quantum dot in a cavity
• Contrast in transmission spectroscopy of a single quantum dot

Cited by in corpus (5)

• Emission spectrum of a dressed exciton-biexciton complex in a semiconductor quantum dot
• Dressed excitonic states and quantum interference in a three-level quantum dot ladder system
• Entangled photon pairs from a quantum dot cascade decay: the effect of time-reordering
• Investigations of a coherently driven semiconductor optical cavity QED system
• Forster energy transfer signatures in optically driven quantum dot molecules