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Quantum mechanics

Quantum mechanics

Local realism is dead, long live local realism? Exploring loopholes in Bell tests

23 Jun 2017

Rebecca Holmes describes groundbreaking experiments that finally closed the long-standing loopholes in Bell tests, suggesting the end of the road for local realism. But could local realism yet live on?

(Courtesy: Frank Auperle/TU Delft)
In the early 1960s the physicist John Bell dreamt up one of the most profound experimental tests eve

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Rebecca Holmes is a physicist at the University of Illinois at Urbana-Champaign, US, @rebeccaholmes
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