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Proceedings Paper

Wavelength-resolved Purcell enhancement of PbS/CdS quantum dots measured on a chip-based platform
Author(s): Lukas Elsinger; Ronan Gourgues; Iman E. Zadeh; Jorick Maes; Antonio Guardiani; Gabriele Bulgarini; Silvania F. Pereira; Sander N. Dorenbos; Val Zwiller; Zeger Hens; Dries Van Thourhout
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Paper 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.

Paper Details

Date Published: 26 February 2020
PDF: 6 pages
Proc. SPIE 11289, Photonic and Phononic Properties of Engineered Nanostructures X, 1128914 (26 February 2020); doi: 10.1117/12.2547265
Show Author Affiliations
Lukas Elsinger, imec (Belgium)
Ghent Univ. (Belgium)
Ronan Gourgues, Single Quantum B.V. (Netherlands)
Iman E. Zadeh, Delft Univ. of Technology (Netherlands)
Jorick Maes, Ghent Univ. (Belgium)
Antonio Guardiani, Single Quantum B.V. (Netherlands)
Gabriele Bulgarini, Single Quantum B.V. (Netherlands)
Silvania F. Pereira, Delft Univ. of Technology (Netherlands)
Sander N. Dorenbos, Single Quantum B.V. (Netherlands)
Val Zwiller, KTH (Sweden)
Zeger Hens, Ghent Univ. (Belgium)
Dries Van Thourhout, imec (Belgium)
Ghent Univ. (Belgium)

Published in SPIE Proceedings Vol. 11289:
Photonic and Phononic Properties of Engineered Nanostructures X
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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