BBC Researchers Break Quantum Mechanics Complementarity Rule

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Researchers have successfully challenged the fundamental complementarity rule of quantum mechanics, which traditionally states that light cannot be observed as both a wave and a particle simultaneously. In a groundbreaking experiment published in Science, they demonstrated the ability to observe light exhibiting both behaviors at once. This discovery is considered a significant advancement in understanding quantum reality, previously thought to be impossible according to established theory. The findings suggest a new perspective on atomic-scale interactions and could have profound implications for the field of quantum physics. This breakthrough invites further exploration into the complexities of quantum behavior.
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Report on the BBC:

"Researchers have bent one of the most basic Rules of Quantum Mechanics, a counterintuitive branch of physics that deals with atomic-scale interactions.

Its "complementarity" rule asserts that it is impossible to observe light behaving as both a wave and a particle, though it is strictly both.

In an experiment reported in Science, researchers have now done exactly that.

They say that the feat "pulls back the veil" on quantum reality in a way that was thought to be prohibited by theory."
 
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I am slowly going through the book 'What Is a Quantum Field Theory?' by Michel Talagrand. I came across the following quote: One does not" prove” the basic principles of Quantum Mechanics. The ultimate test for a model is the agreement of its predictions with experiments. Although it may seem trite, it does fit in with my modelling view of QM. The more I think about it, the more I believe it could be saying something quite profound. For example, precisely what is the justification of...
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