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arXiv · 2203.06280

Correlations between cascaded photons from spatially localized biexcitons in ZnSe

Robert M. Pettit·Aziz Karasahin·Nils von den Driesch·Marvin Marco Jansen·Alexander Pawlis·Edo Waks
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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.

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Robert M. Pettit, Aziz Karasahin, Nils von den Driesch, Marvin Marco Jansen, Alexander Pawlis, Edo Waks. 2022-03-11. Correlations between cascaded photons from spatially localized biexcitons in ZnSe. https://doi.org/10.1021/acs.nanolett.2c03527

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