Proceedings of SPIE: Wavelength-resolved Purcell enhancement of PbS/CdS quantum dots measured on a chip-based platform

Lukas Elsinger, Ronan Gourgues, Iman E. Zadeh, Jorick Maes, Antonio Guardiani, Gabriele Bulgarini, Silvania F. Pereira, Sander N. Dorenbos, Val Zwiller, More Authors

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

Future quantum optical networks will require an integrated solution to multiplex suitable sources and detectors on a low-loss platform. Here we combined superconducting single-photon detectors with colloidal PbS/CdS quantum dots (QDs) and low-loss silicon nitride passive photonic components to show their combined operation at cryogenic temperatures. Using a planar concave grating spectrometer, we performed wavelength-resolved measurements of the photoluminescence decay of QDs, which were deterministically placed in the gap of plasmonic antennas, in order to improve their emission rate. We observed a Purcell enhancement matching the antenna simulations, with a concurrent increase of the count rate on the superconducting detectors.

Original languageEnglish
Title of host publicationPhotonic and Phononic Properties of Engineered Nanostructures X
EditorsAli Adibi, Shawn-Yu Lin, Axel Scherer
PublisherSPIE
Number of pages7
Volume11289
ISBN (Electronic)9781510633414
DOIs
Publication statusPublished - 2020
EventPhotonic and Phononic Properties of Engineered Nanostructures X 2020 - San Francisco, United States
Duration: 3 Feb 20206 Feb 2020

Conference

ConferencePhotonic and Phononic Properties of Engineered Nanostructures X 2020
CountryUnited States
CitySan Francisco
Period3/02/206/02/20

Keywords

  • Colloidal quantum dots
  • Photonic integration
  • Plasmonic antennas
  • Silicon nitride
  • Superconducting nanowire single-photon detectors

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