Seminar über Quanten-, Atom- und Neutronenphysik (QUANTUM)

Nov. 25, 2021 at 2 p.m. only via Zoom

Prof. Dr. Peter van Loock
Institut für Physik

Dr. Lars von der Wense
Institut für Physik

Quantum optics with solid-state quantum emitters and waveguides
Dr. Sarah Skoff (Technische Universität Wien)

Since quantum technology is becoming advanced, new ways are sought to make miniature systems for quantum networks and sensing. Solid-state quantum emitters have therefore moved into focus as they lend themselves for integration into nanophotonic platforms and come in a variety of forms and with a variety of different level structures. Here, I want to present two different kinds of solid-state platforms, single molecules in solids and quantum emitters in 2D materials. I will present measurements on coupling these quantum emitters to waveguides, in particular optical nanofibers. These are waveguides that are naturally integrated with optical fibers and enhance the light-matter interaction by their strong transverse confinement of the guided light field. I will also show how the light-matter interaction can be further increased by employing fiber-based cavities. These cavities have been shown to work equally well at room temperature and cryogenic temperatures, where the latter is still most often a requirement for solid-state system due to the phonons from the host material. However due to the 2D nature of the host material, quantum emitters in 2D hexagonal Boron nitride may provide a platform for quantum tech-nology that could also operate a room temperature and I will give an overview of recent measurements with these emitters and give an outlook of our endeavour to bring solid-state quantum optics to a room temperature environment.