Here’s what you’ll learn when you read this story:The Greenberger–Horne–Zeilinger (GHZ) paradox describes how quantum theory cannot be described by local realistic descriptions. A new study takes this GHZ paradox to new heights to see just how non-classical the quantum world can get. In the process, their experiment included photons in 37 dimensions, taking science even further down this strange quantum rabbit hole with the hopes of finding applications in these high-dimensional systems. This extremely technical experiment produced photons, or particles of light, that existed in 37 dimensions. “This experiment shows that quantum physics is more nonclassical than many of us thought,” Technical University of Denmark’s Zhenghao Liu, a co-author of the study, told New Scientist.