Nanowerk April 6, 2022
Several different approaches to realize solid-state quantum emitters with high performance have been pursued and different concepts for energy tuning have been established. However, the properties of the emitted photons are always defined by the individual quantum emitter and can therefore not be controlled with full flexibility. An international team of researchers (Germany, USA – University of Arizona) has developed an all-optical nonlinear method to tailor and control the single photon emission. They demonstrated a laser-controlled down-conversion process from an excited state of a semiconductor quantum three-level system. Based on this concept, they realized energy tuning and polarization control of the single photon emission with a control-laser field. The work is an important step towards tailored single photon emission from a photonic quantum system based on quantum optical principles…read more. Open Access TECHNICAL ARTICLE
Excitation and down-conversion scheme. Credit: Nature Communications volume 13, Article number: 1387 (2022)Â