The research conducted by Prof. Li Mingjie, Associate Professor of the Department of Applied Physics, PolyU and Prof. Susanne F. Yelin from Harvard University was published in Nature titled "Chiral Superfluorescence from Perovskite Superlattices at Room Temperature" on 3 June 2026. This paper reports the first observation of room-temperature chiral superfluorescence from perovskite superlattices. Their team shows that emission from edge states evolves from initially unpolarized spontaneous luminescence into a coherent, circularly polarized burst, and that the polarization reverses for superlattices of opposite handedness. By linking structural chirality with macroscopic quantum coherence in a scalable materials platform, this work opens new avenues for controllable chiral quantum light sources in solid-state photonics. The findings reveal an interplay between chirality and many-body quantum coherence, pointing toward promising directions for chirality-controlled quantum optical applications.
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