Purcell-Enhanced Single Photon Source Based on a Deterministically Placed WSe2Monolayer Quantum Dot in a Circular Bragg Grating Cavity

Oliver Iff, Quirin Buchinger, Magdalena Moczała-Dusanowska, Martin Kamp, Simon Betzold, Marcelo Davanco, Kartik Srinivasan, Sefaattin Tongay, Carlos Antón-Solanas, Sven Höfling, Christian Schneider

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish (US)
Pages (from-to)4715-4720
Number of pages6
JournalNano Letters
Volume21
Issue number11
DOIs
StatePublished - Jun 9 2021
Externally publishedYes

Keywords

  • Purcell effect
  • bullseyes cavities
  • quantum dots
  • single photons
  • two-dimensional materials

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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