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arXiv · 2304.02875

Ultrafast and Bright Quantum Emitters from the Cavity Coupled Single Perovskite Nanocrystals

Seongmoon Jun·Joonyun Kim·Minho Choi·Byungsu Kim·Jinu Park·Daehan Kim·Byungha Shin·Yong-Hoon Cho
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Abstract

Perovskite nanocrystals (NCs) have attracted increasing interest for the realization of single-photon emitters, owing to their ease of chemical synthesis, wide spectral tunability, fast recombination rate, scalability, and high quantum yield. However, the integration of a single perovskite NC into a photonic structure is yet to be accomplished. We successfully coupled a highly stable individual zwitterionic ligand-based CsPbBr3 perovskite NC with a circular Bragg grating (CBG). The far-field radiation pattern of the NC inside the CBG exhibits high directionality toward a low azimuthal angle, which is consistent with the simulation results. We observed a 5.4-fold enhancement in brightness due to an increase in collection efficiency. Moreover, we achieved a 1.95-fold increase in the recombination rate. This study offers ultrafast (< 100 ps) single-photon emission and an improved brightness of perovskite NCs, which are critical factors for practical quantum optical applications.

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Seongmoon Jun, Joonyun Kim, Minho Choi, Byungsu Kim, Jinu Park, Daehan Kim, Byungha Shin, Yong-Hoon Cho. 2023-04-06. Ultrafast and Bright Quantum Emitters from the Cavity Coupled Single Perovskite Nanocrystals. https://arxiv.org/abs/2304.02875

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