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Spin - overlapping photons with opposite spin

  1. Sep 10, 2007 #1
    Hi. Couple of questions:

    1) is it physically possible for two photons to overlap completely while having opposite spin (so one is +1, the other is -1, and they overlap like in a laser)?

    2) if yes, what would this arrangement of photons correspond to, if anything, i.e. where in nature would you find such an arrangement? (e.g. Is this how photons would interact between a south pole and a north pole or between a positive charge and negative charge? Would it have any other noteworthy physical manifestation?)

    All responses appreciated.
  2. jcsd
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