Deterministic strain-induced arrays of quantum emitters in a two-dimensional semiconductor

Artur Branny, Santosh Kumar, Raphael Proux, Brian D. Gerardot

Research output: Contribution to journalArticle

111 Citations (Scopus)
46 Downloads (Pure)

Abstract

An outstanding challenge in quantum photonics is scalability, which requires positioning of single quantum emitters in a deterministic fashion. Site positioning progress has been made in established platforms including defects in diamond and self-assembled quantum dots, albeit often with compromised coherence and optical quality. The emergence of single quantum emitters in layered transition metal dichalcogenide semiconductors offers new opportunities to construct a scalable quantum architecture. Here, using nanoscale strain engineering, we deterministically achieve a two-dimensional lattice of quantum emitters in an atomically thin semiconductor. We create point-like strain perturbations in mono-and bi-layer WSe 2 which locally modify the band-gap, leading to efficient funnelling of excitons towards isolated strain-tuned quantum emitters that exhibit high-purity single photon emission. We achieve near unity emitter creation probability and a mean positioning accuracy of 120±32 nm, which may be improved with further optimization of the nanopillar dimensions.

Original languageEnglish
Article number15053
JournalNature Communications
Volume8
DOIs
Publication statusPublished - 22 May 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Deterministic strain-induced arrays of quantum emitters in a two-dimensional semiconductor'. Together they form a unique fingerprint.

  • Cite this