Photoluminescence Spectroscopy of the Molecular Biexciton in Vertically Stacked Quantum Dot Pairs

Abstract

We present photoluminescence studies of the molecular neutral biexciton-exciton spectra of individual vertically stacked InAs/GaAs quantum dot pairs. We tune either the hole or the electron levels of the two dots into tunneling resonances. The spectra are described well within a few-level, few-particle molecular model. Their properties can be modified broadly by an electric field and by structural design, which makes them highly attractive for controlling nonlinear optical properties.

4 pages, 5 figures, (v2, revision based on reviewers comments, published)

References in corpus (3)

• Entangled Photon Pairs from Semiconductor Quantum Dots
• Direct Observation of Controlled Coupling in an Individual Quantum Dot Molecule
• Optically Probing Spin and Charge Interactions in an Tunable Artificial Molecule

Cited by in corpus (4)

• Scalable qubit architecture based on holes in quantum dot molecules
• The role of phonons for exciton and biexciton generation in an optically driven quantum dot
• Enhanced sequential carrier capture into individual quantum dots and quantum posts controlled by surface acoustic waves
• Adiabatic optical entanglement between electron spins in separate quantum dots