Pronounced Purcell enhancement of spontaneous emission in CdTe/ZnTe quantum dots embedded in micropillar cavities

Abstract

The coupling of CdTe/ZnTe quantum dot (QD) emission to micropillar cavity eigenmodes in the weak coupling regime is demonstrated. We analyze photoluminescence spectra of QDs embedded in monolithic micropillar cavities based on Bragg mirrors which contain MgSe/ZnTe/MgTe superlattices as low-index material. The pillar emission shows pronounced cavity eigenmodes and their spectral shape is in good agreement with simulations. QD emission in resonance with the cavity mode is shown to be efficiently guided toward the detector and an experimental Purcell enhancement by a factor of 5.7 is determined, confirming theoretical expectations.

arXiv comment3 figures

References in corpus (8)

• Quantum nature of a strongly-coupled single quantum dot-cavity system
• Optical manipulation of a single Mn spin in a CdTe-based quantum dot
• Phonon-assisted transitions from quantum dot excitons to cavity photons
• Origin of the emission within the cavity mode of coupled quantum dot-cavity systems
• Continuous-wave versus time-resolved measurements of Purcell-factors for quantum dots in semiconductor microcavities
• What is measured in a photoluminescence experiment on Quantum dots embedded in a large Purcell factor microcavity?
• Picosecond charge variation of quantum dots under pulsed excitation
• High-reflectivity broadband distributed Bragg reflector lattice matched to ZnTe

Cited by in corpus (4)

• MBE grown microcavities based on selenium and tellurium compounds
• Exciton-polaritons of a 2D semiconductor layer in a cylindrical microcavity
• Single-color, in situ photolithography marking of individual CdTe/ZnTe Quantum Dots containing a single Mn2+ ion
• Deterministic photon storage and readout in a semimagnetic quantum-dot--cavity system doped with a single Mn ion