Wolfgang Löffler Lab - Solid State and High Dimensional Quantum Optics

Advancing the understanding of the interaction of light and matter on the single-quantum level is important for near-future quantum technologies but also to answer fundamental questions.

One major research topic is solid-state quantum optics with micro-cavities, which enable a very efficient interaction of single photons and single solid-state quantum dots. This is useful, for instance, for the development of deterministic single-photon and entangled-photon sources, in contrast to conventional probabilistic methods.

Another topic is the investigation of multi-photon entanglement in higher dimensions: Here, the single particle is not a qubit, but a quNit, which carries more quantum information, corresponding to a large alphabet classically compared to the traditional zero or one.