摘要
Epitaxial quantum dots(QDs)are high-quality semiconductor nanostructures that mimic atoms for their discrete energy levels.Developments of QDs date back to the early 1990s in quest of temperature-insensitive lasers.Since then,much effort has been devoted to studying the fundamental physical phenomena observed in those quantum-confined structures.Recently,the QD community has shifted its focus onto quantum photonics applications,motivated by the rapidly developing quantum science.The most prominent application for QDs is their use as a deterministic single-photon source—a non-classical emission of light that underpins quantum computation,communication,and sensing.The field has grown substantially within the last decade,shifting from controlled growth of isolated QDs to a full integration of ultra-pure QD single photon sources with photonic nanostructures[1–6].
