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Eliminating the coincidence counter

  1. Feb 5, 2009 #1
    In DCQE, if you leave out the coincidence counter, does it effect the results at D0? Or is it impossible to know?

    What I want to know is...do you collapse the wave when you measure the particle.....or does that information need to be accessible to a human observer.

    Or even simpler....in the double slit experiment, if you measure which slit the particle went through, and then destroy any information about the result, without ever knowing what it was, does the interference pattern disappear?

    Thanks
     
  2. jcsd
  3. Feb 5, 2009 #2
    If which slit information was written by a robot arm onto paper and then the paper burnt, so no observer could read it ever again? hmmmm......
     
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