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How does entanglement affect a photon's ability to interfere?

  1. Jun 10, 2007 #1
    Suppose a single entangled photon with wave function

    [tex]|\phi > = [/tex][tex]{1}\over{2 \sqrt{2}}[/tex][tex] ( ((|H>+|V>)_A|H>_B)_C + ((|H>+|V>)_A|V>_B ))_D[/tex]

    If the signal in C is recombined with the signal in D, would the photon interfere with itself or not considering the entangled member is in opposite state?

    More generally, how can I tell when a wave function is split in two with a beamsplitter, if when recombined, interference fringes will be seen at the detector?

    Thanks in advance!
    Last edited: Jun 10, 2007
  2. jcsd
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