Anton Zeilinger coauthored an experiment preparing GHZ states of three spatially separated photons. The distinguishing feature is the quantum coherence between the two three-photon alternatives: recording the same populations alone would also be compatible with an incoherent mixture. Measurements in additional polarization bases tested this distinction, making three-party entanglement an experimental resource for investigating local realism.[ref]
Observation of Three-Photon Greenberger-Horne-Zeilinger Entanglement by Dik Bouwmeester and others. Experimental preparation and polarization-correlation evidence for coherent three-photon entanglement
A physicist researching quantum optics and quantum foundations.[ref]
Professional profile of Anton Zeilinger (oeaw.ac.at). Forschungsbereiche.
Portrait of Anton Zeilinger
. CEU / Daniel Vegel; George Yul, existing portrait crop. CC BY 2.0, via Wikimedia Commons. Source. Articles by others on the same topic
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Anton Zeilinger is an Austrian physicist known for his pioneering work in the field of quantum mechanics, particularly in quantum information science and quantum entanglement. He has made significant contributions to the understanding of quantum phenomena, conducting experiments that have helped to test and illustrate the principles of quantum theory. Zeilinger is recognized for his work in quantum teleportation, quantum cryptography, and the foundations of quantum mechanics.