We demonstrate a deterministic Purcell-enhanced single-photon source realized by integrating an atomically thin WSe$_{ 2}$ layer with a circular Bragg grating cavity. The cavity significantly enhances the photoluminescence from the atomically thin layer, and supports single-photon generation with $g^{ (2)}(0)<0.25$. We observe a consistent increase of the spontaneous emission rate for WSe$_{ 2}$ emitters located in the center of the Bragg grating cavity. These WSe$_{ 2}$ emitters are self-aligned and deterministically coupled to such a broadband cavity, configuring a new generation of deterministic single-photon sources, characterized by their simple and low-cost production and intrinsic scalability.
Categories: quant-ph cond-mat.mes-hall cond-mat.mtrl-sci