Correlations between Cascaded Photons from Spatially Localized Biexcitons in ZnSe.
basic_science · Level V
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- Record sourced from PubMed, PMID 36441911.
- Also identified by DOI 10.1021/acs.nanolett.2c03527.
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Abstract
Radiative cascades emit correlated photon pairs, providing a pathway for the generation of entangled photons. The realization of a radiative cascade with impurity atoms in semiconductors, a leading platform for the generation of quantum light, would therefore provide a new avenue for the development of entangled photon pair sources. Here we demonstrate a radiative cascade from the decay of a biexciton at an impurity-atom complex in a ZnSe quantum well. The emitted photons show clear temporal correlations revealing the time-ordering of the cascade. Our result establishes impurity atoms in ZnSe as a potential platform for photonic quantum technologies using radiative cascades.