Advanced Perovskite Nanocrystals Quantum Dots for Quantum Light Technologies

Collaboration between the CFM “Nanomaterials and Spectroscopy Group” and the DIPC “Nanophotonics of 2D Materials Group” is helping to shape the future of quantum photonics by advancing perovskite quantum dots as a new class of highly efficient single-photon light sources.

Single photons are a cornerstone of emerging quantum technologies, underpinning secure quantum communication, quantum sensing, and photonic quantum computing. In a recent comprehensive paper published in Applied Physics Reviews, we summarize our research findings, assess the rapid progress in metal-halide perovskite quantum dots, and outline the scientific challenges that must be addressed to turn them into practical quantum devices.

The paper highlights how advances in surface chemistry, quantum dots design, and photonic coupling are enabling unprecedented control over light–matter interactions. By integrating perovskite quantum dots with optical and plasmonic nanostructures, we can efficiently tailor emission speed, directionality, and coherence – critical steps toward scalable quantum photonic platforms.

While challenges remain, particularly in long-term stability and photon coherence, the pace of progress is remarkable. Strategies developed within the broader materials-physics and nanophotonics communities – core strengths of CFM and DIPC are steadily closing the gap between current devices and ideal quantum light sources.

This work reinforces CFM’s mission to advance fundamental understanding of materials while enabling disruptive technologies, positioning perovskite nanocrystal quantum dots as a promising bridge between basic physics and real-world quantum applications.