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Classical and quantum polarization

  1. Sep 1, 2010 #1
    I would like to know how you get from the classical 4-vector polarization
    to the two component quantum polarization?

    thank you

  2. jcsd
  3. Sep 2, 2010 #2


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    Science Advisor

    You might want to rephrase your question to include more detail,
    since it's not very clear what you're really asking. I'm guessing
    you're interested in something about the 2-component polarization
    of photons and maybe neutrinos, but... hmm... I'm not sure from your
  4. Sep 2, 2010 #3
    yes I am interested in how one gets a 2-component polarization of a photon (which represents a quantum bit) from a 4-component classical polarization vector.

  5. Sep 2, 2010 #4


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    Science Advisor

    A classical EM wave also has only two independent possible polarizations.

    (I.e., you're still not giving enough background/detail in your question to enable
    a satisfactory answer.)
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