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Oslo physicists show cutting a photon in half leaves distant observers unaffected

Researchers at the University of Oslo have combined quantum mechanics with relativity to show that truncating a photon has no immediate effect on how it appears to an observer outside a small transition region, though large numbers of photons are needed to describe the state within it.

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Researchers at the University of Oslo have combined quantum mechanics with relativity to show that truncating a photon has no immediate effect on how it appears to an observer outside a small transition region, though large numbers of photons are needed to describe the state wit…

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