Quantum light sources, especially single-photon emitters, are key for advancing quantum communications and computing, yet face challenges with low excitation efficiency. Here, the authors enhance GaAs quantum dots using a 3D AlGaAs charge-carrier funnel, significantly boosting emission efficiency and paving the way for efficient electrically driven single-photon emitters in quantum systems.
- Sanghyeok Park
- Khalifa M. Azizur-Rahman
- Oleg Mitrofanov
