Correlations between Cascaded Photons from Spatially Localized Biexcitons in ZnSe
Robert M. Pettit, Aziz Karasahin, Nils von den Driesch +3 more
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.
arXiv:2203.06280•Nano Letters•Nov 28, 2022•5 citations