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Information carrued by photons.

  1. Oct 17, 2013 #1
    Ok, so I don't understand, what information is a photon carrying? It's mass, velocity or something like that?
  2. jcsd
  3. Oct 17, 2013 #2


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    The information a photon carries is just like the information an email or telegram carries.

    There are many different possible quantum states a photon or group of photons can be in.

    If we assign a letter, number or other symbol to each possible quantum state, we can send that photon in some quantum state from A to B, where it can be received, and read.

    The better we care able to distinguish between different states of a photon, the better we are able to write and read information encoded in photon states.
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