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Updated: Mar 7, 2026
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
Published on: June 3, 2015
On-Chip Integrated Quantum-Dot-Silicon-Nitride Microdisk Lasers
Weiqiang Xie1, Thilo Stöferle2, Gabriele Rainò2
1Photonics Research Group and Center for Nano- and Biophotonics (NB-Photonics), Ghent University, Technologiepark-Zwijnaarde 15 iGent, 9052, Ghent, Belgium.
Abstract:
Hybrid silicon nitride (SiN)-quantum-dot (QD) microlasers coupled to a passive SiN output waveguide with a 7 µm diameter and a record-low threshold density of 27 µJ cm-2 are demonstrated. A new design and processing scheme offers long-term stability and facilitates in-depth QD material and device characterization, thereby opening new paths for optical communication, sensing, and on-chip cavity quantum optics based on colloidal QDs.
