| Title | Purcell-Enhanced Single Photon Source Based on a Deterministically Placed WSe2 Monolayer Quantum Dot in a Circular Bragg Grating Cavity |
| Publication Type | Journal Article |
| Year of Publication | 2021 |
| Authors | O. Iff, Q. Buchinger, M. Moczala-Dusanowska, M. Kamp, S. Betzold, M. Davanco, K. Srinivasan, S. Tongay, C. Anton-Solanas, S. Hoefling, and C. Schneider |
| Journal | Nano Lett. |
| Volume | 21 |
| Pagination | 4715-4720 |
| Date Published | JUN 9 |
| Type of Article | Article |
| ISSN | 1530-6984 |
| Keywords | bullseyes 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. |
| DOI | 10.1021/acs.nanolett.1c00978 |
