Purcell–enhanced single photon source based on a deterministically placed WSe2 monolayer quantum dot in a circular Bragg grating cavity

Published

May 28, 2021

Author(s)

Oliver Iff, Quirin Buchinger, Magdalena Moczala-Dusanowska, Martin Kamp, Simon Betzold, Marcelo I. Davanco, Kartik Srinivasan, Sefaattin Tongay, Carlos Anton-Solanas, Sven Hofling, Christian Schneider

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

Citation

Nano Letters

Volume

21

Issue

11

Pub Type

Journals

Download Paper

https://doi.org/10.1021/acs.nanolett.1c00978

Local Download

Keywords

WSe2, Quantum Emitters, Nanophotonics, Single-Photon Sources

Citation

Iff, O. , Buchinger, Q. , Moczala-Dusanowska, M. , Kamp, M. , Betzold, S. , Davanco, M. , Srinivasan, K. , Tongay, S. , Anton-Solanas, C. , Hofling, S. and Schneider, C. (2021), Purcell&#8211;enhanced single photon source based on a deterministically placed WSe2 monolayer quantum dot in a circular Bragg grating cavity, Nano Letters, [online], https://doi.org/10.1021/acs.nanolett.1c00978, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=931792 (Accessed October 16, 2025)