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Coalescence and Anti-Coalescence Interference of Two-Photon Wavepacket in a Beam Splitter

  • Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875

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  • Published Date: January 31, 2004
    Abstract
  • We study theoretically the interference of a two-photon wavepacket in a beam splitter. We find that the spectrum symmetry for the two-photon wavepacket dominates the perfect coalescence and anti-coalescence interference. The coalescence interference is unrelated to photon entanglement. Only the anti-coalescence interference has evidence of photon entanglement. We prove that the two-photon wavepacket with an anti-symmetric spectrum is transparent to pass the 50/50 beam splitter, showing perfect anti-coalescence interference.


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