| Authors: | L. Elsinger, R. Gourgues, I. E. Zadeh, J. Maes, A. Guardiani, G. Bulgarini, S. F. Pereira, S. N. Dorenbos, V. Zwiller, Z. Hens, D. Van Thourhout | | Title: | Wavelength-resolved Purcell enhancement of PbS/CdS quantum dots measured on a chip-based platform | | Format: | International Conference Proceedings | | Publication date: | 2/2020 | | Journal/Conference/Book: | Photonics West (OPTO)
| | Editor/Publisher: | SPIE, | | Volume(Issue): | Proc. SPIE 11289 p. 1128914 | | Location: | San Francisco, United States | | DOI: | 10.1117/12.2547265 | | Citations: | Look up on Google Scholar
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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. Related Research Topics
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