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I Delayed Choice Black Hole Experiment

  1. Aug 16, 2016 #1
    What if our quantum eraser was a black hole? There's talk of event horizons preserving all the information that crosses them? Could we test this hypothesis by seeing whether or not black holes make good quantum erasers?

    Depending on the distance to the black hole - it might be hundreds, thousands, or billions of years to reach it - and even then, the photons would just redshift into oblivion from our perspective, but we wouldn't have to wait all that time. The presence of a clump pattern or an interference pattern at the time of the experiment would, in effect, predict that future event?

    What would happen if we sent those photons into orbit around the black hole? They'd be in suspended animation, but not irrevocably so. We could choose to intercept their orbits at some future date, or choose not to. This would really put the CHOICE into the "delayed choice experiment." If we got a clump pattern, what's to stop us from never ever intercepting the orbits of the twin photons, or for that matter, from sending the photons careening into the black hole? Would fate intervene, causing someone, maybe millions of years in the future, to intercept the photons and harvest their info? If we got an intervenence pattern, what's to stop us from intercepting the orbits of the photons and harvesting their info?

    What about a new addition to SETI. We send the photons to exoplanets. Usually, we'll get interference patterns, but if we ever get clump patterns, that means something on or near those exoplanets is "detecting" the photons?? I'm honestly asking
  2. jcsd
  3. Aug 16, 2016 #2
    would you want to get close enough to find out???
  4. Aug 18, 2016 #3
    You seem to have the misconception that choosing to erase which-path information changes the observed pattern from "clump pattern" to "interference pattern". This is not the case.
    In delayed choice quantum eraser experiments, the overall observed pattern does not change. Instead, when we chose to erase the which-path information, we are able to obtain a new bit of information which lets us divide the photons into two groups. Each group forms an interference pattern by itself, but the patterns from the two are complementary to each other and combine to the same old "clump pattern" overall.
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