Researchers develop a light source that produces two entangled light beams

Re:Researchers develop a light source that produces two enta... by AlessandroF6587 on Thursday January 05, 2023 @08:32AM (#34259310)

That's not it if you discriminate between linear and circular polarization. You can use a phase inversion mirror to do it. That's the point of the experiment.

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Re:Researchers develop a light source that produces two enta... by n4r9 on Friday January 06, 2023 @03:24AM (#34272323)

There's a result called the no-signaling theorem; the choice of measurement on side A has no effect on the reduced quantum state on side B, therefore does not influence the outcome statistics of any measurement on side B: https://en.m.wikipedia.org/wiki/No-communication_theorem

A might know exactly what B is going to measure, after he's done his part, but that doesn't mean any information can be transmitted.

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