Correlated Photon-Pair Emission from a Charged Single Quantum Dot
S. M. Ulrich, M. Benyoucef, P. Michler, N. Baer, P. Gartner, F., Jahnke, M. Schwab, H. Kurtze, M. Bayer, S. Fafard, and Z. Wasilewski
TL;DR
This paper investigates the emission of correlated photon pairs from a charged single quantum dot, revealing insights into the decay processes and spin dynamics of charged biexciton and trion states using spectroscopy and correlation measurements.
Contribution
It provides new experimental evidence and theoretical insights into the radiative decay mechanisms and spin configurations in charged quantum dot complexes.
Findings
Demonstrated temporally correlated decay of charged biexciton and trion states
Provided evidence for radiative decay from excited trion states
Enhanced understanding of spin dynamics in quantum dot systems
Abstract
The optical creation and recombination of charged biexciton and trion complexes in an (In,Ga)As/GaAs quantum dot is investigated by micro-photoluminescence spectroscopy. Photon cross-correlation measurements demonstrate the temporally correlated decay of charged biexciton and trion states. Our calculations provide strong evidence for radiative decay from the excited trion state which allows for a deeper insight into the spin configurations and their dynamics in these systems.
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