Physorg March 6, 2018
To achieve the reabsorption of a photon at room temperature, an international team of researchers (Germany, UK) used a plasmonic nanoresonator, in the form of an extremely narrow slit in a thin gold layer. They controlled the coupling between the resonator and the quantum emitter by implementing a method that allows them to continuously change the coupling and, to switch it on and off in a precise manner. They hope to be able to controllably manipulate the coupling of the quantum dot and the resonator not only by changing their distance, but also through external stimuli—possibly even by single photons. This would result in unprecedented new possibilities for optical quantum computers… read more. Open Access TECHNICAL ARTICLE
Artistic representation of a plasmonic nano-resonator realized by a narrow slit in a gold layer. Credit: Heiko Groß