Quantum Experiment Uncovers Light Behaving Across Multiple Dimensions

A team from the University of Science and Technology of China tested a quantum paradox by measuring light in 37 dimensions, exploring the Greenberger-Horne-Zeilinger (GHZ) paradox. Their findings provide insights into quantum phenomena and technologies, revealing how difficult it is for our brains to understand the universe’s workings. While local realism predicts a logical sequence of events, quantum physics, on the other hand, defies this expectation. It shows that, until you check the mailbox, the universe hasn’t yet decided whether there’s mail inside.

Quantum Contexts and Entanglement: The Uncertainty of Reality

Physicists call unresolved events “contexts,” with their relationships known as entanglement. In other words, to know if Aunt Judy sent a card, you must check the mailbox, as reality remains uncertain until then. However, the GHZ paradox challenges local realism by predicting outcomes where Aunt Judy’s card could appear without the postal service’s involvement.

To test this theory, researchers pushed the paradox to its limits by using three contexts, showing that even with just three, local realism fails. Furthermore, they introduced 37 dimensions, which raises profound questions about our perception of reality and the physical meaning of these extra dimensions. In the end, understanding quantum “maybes” opens new paths for exploring reality and advancing quantum technology.

Read Original Article: Science Alert

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