Single Photon Emission From an InGaAs Quantum Dot Precisely Positioned on a Nano-Plane

This work demonstrates single photon emissions from a site-controlled quantum dot (QD) grown on a self-constructed nano plane. The size of the nano plane on the micron-sized multi-facet structure is accurately controlled by a low surface reducing rate (~16 nm/min). Single QD spectral lines were resolved and identified. The anti-bunching behavior reveals that single photons are emitted from the positioned QD.