Bright single-photon emitters with a cdse quantum dot and multimode tapered nanoantenna for the visible spectral range

Maxim Rakhlin, Sergey Sorokin, Dmitrii Kazanov, Irina Sedova, Tatiana Shubina, Sergey Ivanov, Vladimir Mikhailovskii, Alexey Toropov

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We report on single photon emitters for the green-yellow spectral range, which comprise a CdSe/ZnSe quantum dot placed inside a semiconductor tapered nanocolumn acting as a multimode nanoantenna. Despite the presence of many optical modes inside, such a nanoantenna is able to collect the quantum dot radiation and ensure its effective output. We demonstrate periodic arrays of such emitters, which are fabricated by focused ion beam etching from a II-VI/III-V heterostructure grown using molecular beam epitaxy. With non-resonant optical pumping, the average count rate of emitted single photons exceeds 5 MHz with the second-order correlation function g(2) (0) = 0.25 at 220 K. Such single photon emitters are promising for secure free space optical communication lines.

Original languageEnglish
Article number916
JournalNanomaterials
Volume11
Issue number4
DOIs
StatePublished - Apr 2021

Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)

Keywords

  • CdSe
  • MBE
  • Nanoantenna
  • Quantum dots
  • Single-photon emission

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