Directional emission of photons from nanocrystal quantum dots using a hybrid plasmonic-dielectric nanoantenna

Moshe G. Harats, Nitzan Livneh, Shira Yochelis, Yossi Paltiel, Ronen Rapaport

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We design a hybrid circular plasmonic-dielectric nanoantenna for collimation of light emission from nanocrystal quantum dots at room temperature in the near IR spectral range. We implement a two-dimensional k-space imaging technique to obtain the full spectral-angular response of the resonance modes of the hybrid nanoantenna. This method is also used to map the full spectral-angular emission from nanocrystal quantum dots positioned at the center of the hybrid nanoantenna. We achieve a record low 4° divergence angle with a contrast above 17 of the emission into the narrow beam direction compared to emission outside the beam. In addition, we show that the hybrid nanoantenna is operational down to the single quantum dot level and exhibits single photon emission. This is a proof of principal for a room-temperature based single photon source.

Original languageEnglish
Title of host publicationOMN 2015 Jerusalem - 2015 International Conference on Optical MEMS and Nanophotonics, Proceedings
PublisherIEEE Computer Society
ISBN (Electronic)9781467368346
DOIs
StatePublished - 2 Oct 2015
Externally publishedYes
EventInternational Conference on Optical MEMS and Nanophotonics, OMN 2015 - Jerusalem, Israel
Duration: 2 Aug 20155 Aug 2015

Publication series

NameInternational Conference on Optical MEMS and Nanophotonics
Volume02-05-August-2015
ISSN (Print)2160-5033
ISSN (Electronic)2160-5041

Conference

ConferenceInternational Conference on Optical MEMS and Nanophotonics, OMN 2015
Country/TerritoryIsrael
CityJerusalem
Period2/08/155/08/15

Keywords

  • directional emission
  • k-space imaging
  • nanoantenna
  • nanocrystal quantum dots
  • single photons

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