Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.207
Publication date: 16th December 2024
This talk will review our investigations of the quantum optical properties of single lead-halide perovskite nanocrystals.
Lead halide perovskites indeed exhibit outstanding optical and electronic properties for a wide range of applications in optoelectronics and for light-emitting devices. The physics of their band-edge exciton, whose recombination is at the origin of the photoluminescence, is particularly rich and at the heart of current research. In particular, the long-lived ground exciton of lead halide perovskite nanocrystals plays a major role in the quantum properties of the emitted light, since it promotes the formation of biexcitons and thus the emission of correlated photon pairs.
On the other hand, the production of single indistinguishable photons with quantum emitters is fundamental to many applications in quantum optics, such as linear optical quantum computing, quantum teleportation and quantum key distribution. Our current investigations thus aim at reducing the dephasing rate and spectral diffusion in these materials and improve the indistinguishability character of the emitted photons, which is investigated via two-photon interference (i.e. the Hong-Ou-Mandel experiment).
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