Harald Weinfurter coauthored the preparation and observation of three-photon GHZ states. The experiment combined two entangled photon pairs and selected appropriate coincidence detections, producing a conditional three-photon quantum state with polarization correlations beyond those of independent pairs. Its value was to make a genuinely multipartite entangled state available to direct measurement.[ref]
Observation of Three-Photon Greenberger-Horne-Zeilinger Entanglement by Dik Bouwmeester and others. Preparation scheme and coincidence-selected GHZ-state measurements
A physicist who holds an experimental quantum-physics chair at LMU Munich.[ref]
Professional profile of Harald Weinfurter (lmu.de). Final biographical paragraph explicitly names experimental quantum physics chair.
Portrait of Harald Weinfurter
. External portrait hosted by LMU Munich, Experimental Quantum Physics. Source. New to topics? Read the docs here!