Metal nanoantennas and dielectric microresonators for solid-state quantum optics

This paper presents the concepts of metal nanoantennas and dielectric microresonators for solid-state quantum optics. For the microresonators, the concept is extended into the ultraviolet region and the first dielectric pillar microcavity with colloidal ZnO quantum dots is demonstrated. On the other hand, a tunable bowtie optical nanoantenna which consists of two gold nanotriangles is fabricated and with ultrafast laser pulse excitation, its nonlinear properties are investigated. Both concepts are suitable not only for semiconductor quantum dots but also for other nanoemitters of light. This route may lead to a new class of robust active optical quantum devices based on single nanoobjects.