Purcell-Enhanced and Tunable Single-Photon Emission from Telecom Quantum Dots in Circular Photonic Crystal Resonators.

ABSTRACT: Embedding semiconductor quantum dots into bullseye resonators has significantly advanced the development of bright telecom quantum light sources for fiber-based quantum networks. To further improve the device flexibility and stability, the bullseye approach should be combined with a pin diode structure to enable Stark tuning, deterministic charging, and enhanced coherence. In this work, we fabricate and characterize photonic structures incorporating hole gratings that efficiently support charge carrier transport while maintaining excellent optical performance. We report bright, Purcell-enhanced single-photon emission in the telecom C-band under above-band and phonon-assisted excitation. Additionally, we present electrically contacted resonators, demonstrating tunability of quantum d

SUBMITTER: Barbiero A 

PROVIDER: S-EPMC12715836 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature