Purcell-enhanced single photon source based on a deterministically placed WSe$_{2}$ monolayer quantum dot in a circular Bragg grating cavity

• URL: http://arxiv.org/abs/2102.02827v1
• Date: Thu, 4 Feb 2021 19:00:01 GMT
• Title: Purcell-enhanced single photon source based on a deterministically placed WSe$_{2}$ monolayer quantum dot in a circular Bragg grating cavity
• Authors: O. Iff, Q. Buchinger, M. Mocza{\l}a-Dusanowska, M. Kamp, S. Betzold, S. Tongay, C. Ant\'on-Solanas, S. H\"ofling, C. Schneider
• Abstract summary: deterministic single-photon source realized by integrating an atomically thin WSe$_2$ layer with a circular Bragg grating cavity. We observe a consistent increase of the spontaneous emission rate for WSe$_2$ emitters located in the center of the Bragg grating cavity.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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.

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