Chiral superfluorescence from perovskite superlattices at room temperature.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 42236939.
- Also identified by DOI 10.1038/s41586-026-10637-x and PMC identifier 13253322.
- Licence recorded as CC BY-NC-ND.
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Abstract
Superfluorescence (SF) is the collective emission of intense, coherent light from an interacting ensemble of quantum emitters<sup>1-4</sup>. Although SF has been observed in several solid-state materials<sup>5-8</sup>, the spontaneous generation of circularly polarized SF from chiral materials (chiral SF) has not been realized<sup>9,10</sup>. Here, we report the observation of chiral SF originating from edge states in large-area (>100 µm × 100 µm), vertically aligned chiral perovskite superlattices at room temperature. Theoretical quantum optics calculations describe the transition from initially unpolarized, incoherent spontaneous emission to a coherent chiral SF state, quantitatively reproducing both the experimentally observed generation of circular polarization (up to about 14%) and its reversal of sign with opposite material handedness. Moreover, we show that both the intensity and the degree of circular polarization of chiral SF can be modulated by a weak magnetic field, enabling precise control over solid-state quantum light emission at room temperature. Our findings demonstrate an interplay between chirality and many-body quantum coherence, thereby showing promising new directions for chirality-controlled quantum optical applications.