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 language | English |
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| Title of host publication | Photonic and Phononic Properties of Engineered Nanostructures X |
| Editors | Ali Adibi, Shawn-Yu Lin, Axel Scherer |
| Publisher | SPIE |
| Number of pages | 7 |
| Volume | 11289 |
| ISBN (Electronic) | 9781510633414 |
| DOIs | |
| Publication status | Published - 2020 |
| Event | Photonic and Phononic Properties of Engineered Nanostructures X 2020 - San Francisco, United States Duration: 3 Feb 2020 → 6 Feb 2020 |
Conference
| Conference | Photonic and Phononic Properties of Engineered Nanostructures X 2020 |
|---|---|
| Country/Territory | United States |
| City | San Francisco |
| Period | 3/02/20 → 6/02/20 |
Keywords
- Colloidal quantum dots
- Photonic integration
- Plasmonic antennas
- Silicon nitride
- Superconducting nanowire single-photon detectors