Anton Zeilinger studied physics and mathematics at the University of Wien, in 1990 became Professor of Experimental Physics at the University of Innsbruck, since 1999 is at the University of Wien and since 2004 is Scientific Director at the new Institute of Quantum Optics and Quantum Information (IQOQI) of the Austrian Academy of Sciences. Anton Zeilinger is well known for his experiments in Quantum Teleportation, and his general interest lies in the foundation of quantum physics, (he is an advocate of the Copenhagen school), most recently in macroscopic quantum phenomena. He also started a project for the constitution of the new “Institute of Science and Technology of Austria”, and is also influential in the public educational life of Austria.
Lay people generally assume that science and physics in particular deals with the question “what is reality?” and is capable in fact of depicting the reality of our world. In particular, most physicists think that quantum physics is the best that science has produced for explaining reality. At the same time, we are offered a situation in which atoms or electrons can be seen as waves, or as particles, and the one picture is inconsistent with the other. Does reality then depend on the experimental setting, namely on the choice of the observer? Such and similar fundamental questions have led to experiments with individual quantum particles. Unexpectedly to all early experimentalists in the filed this kind of work has led to ideas for a new information technology including topics like quantum cryptography, quantum computation, and quantum teleportation. These new experiments again raise new fundamental questions like “What is computation?”
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