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Matthew Leifer is Assistant Professor of Physics at the Institute for Quantum Studies and Schmid College of Science and Technology at Chapman University. His research interests include quantum foundations and quantum information theory, particularly problems at the intersection of the two areas.
The Greenberger–Horne–Zeilinger (GHZ) experiment is a variant of the EPR experiment that involves an entangled state of four spin-½ particles. The advantage is that it allows Bell’s theorem to be proved without the use of inequalities. The GHZ argument was subsequently simplified by Mermin so that it only needs three spin-½ particles. This is the version usually called the GHZ or GHZ-Mermin experiment today.
Hans Christian von Baeyer is Professor of Physics, emeritus at the College of William and Mary.
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Book Reviews. Phys. Perspect. 19, 76–87 (2017). https://doi.org/10.1007/s00016-017-0196-5
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DOI: https://doi.org/10.1007/s00016-017-0196-5