In a groundbreaking finding that upends conventional ideas about cause and effect, quantum physicists have recorded photons appearing to spend a negative amount of time interacting with atoms before emerging from a cloud of matter.
Once regarded as a mathematical quirk, this phenomenon has now been directly confirmed through rigorous experiments conducted on rubidium atoms. The results, published in Physical Review Letters, show that under particular quantum conditions, light particles can exit a material before they would be expected to enter it, based on average travel times.
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