Researchers quantum teleport particle of light six kilometres

Re:Researchers quantum teleport particle of light six kilome... by arcticfox on Wednesday September 21, 2016 @02:37PM (#12550991)

Is their any layman's physics explanation of how this works? Obviously you can't transmit information, but one particle can affect the other at distance faster than the speed of light?

My sense was that quantum physics basically makes sense if you go really small and have an understanding of how the particles interact. But entanglement is weird, because somehow there's also a mechanism for them to interact at distance?

(I know, I could try to look it up, but hopefully other people here have the same silly question)

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Re:Researchers quantum teleport particle of light six kilome... by JanezStupar on Wednesday September 21, 2016 @02:54PM (#12551147)

Particles are constantly randomly changing their state. Entangled particles change in tandem.

As the GP said - to find out whether a particular change of state was random or a signal, one would need to compare readings from both.

Readings cannot be sent faster than the speed of light. Thus preserving causality.

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Re:Researchers quantum teleport particle of light six kilome... by tvmalsv on Wednesday September 21, 2016 @02:55PM (#12551159)

While I don't have an explanation for you, you aren't the only one to think it's weird. Einstein called it "spooky action at a distance".

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