Light dressed-excitons in an incoherent-electron sea: Evidence for Mollow-triplet and Autler-Townes doublet

Abstract

We demonstrate that the interaction between excitons and a sea of incoherent electrons does not preclude excitons dressing by light. We investigate the role of exciton-electron scattering in the light dressing by measuring the dynamical absorption spectrum of a modulation-doped CdTe quantum well, which shows a clear evidence for significant electron scattering of the excitonic states. We show the occurrence of dressed and correlated excitons by detecting quantum coherent interferences through excitonic Autler-Townes doublet and ac Stark splitting, which evolves to Mollow triplet with gain. We also evidence the partial inhibition of the electron-exciton scattering by exciton-light coupling.

References in corpus (1)

• Theory of neutral and charged exciton scattering with electrons in semiconductor quantum wells

Cited by in corpus (8)

• Ultrafast tristable spin memory of a coherent polariton gas
• Tunneling-induced transparency and Autler-Townes splitting in a triple quantum dot
• Biexciton oscillator strength
• Tunneling induced dark states and controllable fluorescence spectrum in quantum-dot molecules
• Metamorphosis of Goldstone and Soft Fluctuation Modes in Polariton Lasers
• Terahertz Spectroscopy of Semiconductor Microcavity Lasers I: Photon Lasers
• Dipole-dipole interacting two-level emitters in a moderately intense laser field
• Collective terahertz fluctuation modes in a polariton laser