RSS icon
Twitter icon
Facebook icon
Vimeo icon
YouTube icon

Purcell-Enhanced Single Photon Source Based on a Deterministically Placed WSe2 Monolayer Quantum Dot in a Circular Bragg Grating Cavity

TitlePurcell-Enhanced Single Photon Source Based on a Deterministically Placed WSe2 Monolayer Quantum Dot in a Circular Bragg Grating Cavity
Publication TypeJournal Article
Year of Publication2021
AuthorsO. Iff, Q. Buchinger, M. Moczala-Dusanowska, M. Kamp, S. Betzold, M. Davanco, K. Srinivasan, S. Tongay, C. Anton-Solanas, S. Hoefling, and C. Schneider
JournalNano Lett.
Volume21
Pagination4715-4720
Date PublishedJUN 9
Type of ArticleArticle
ISSN1530-6984
Keywordsbullseyes cavities, Purcell effect, Quantum Dots, single photons, two-dimensional materials
Abstract

We demonstrate a deterministic Purcell-enhanced single photon source realized by integrating an atomically thin WSe2 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 WSe2 emitters located in the center of the Bragg grating cavity. These WSe2 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.

DOI10.1021/acs.nanolett.1c00978