Chin. Phys. Lett.  2004, Vol. 21 Issue (2): 302-305    DOI:
Original Articles |
Coalescence and Anti-Coalescence Interference of Two-Photon Wavepacket in a Beam Splitter
WANG Kai-Ge;YANG Guo-Jian
Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875
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WANG Kai-Ge, YANG Guo-Jian 2004 Chin. Phys. Lett. 21 302-305
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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.


Keywords: 42.50.Dv      03.65.Ud      42.50.Ar     
Published: 01 February 2004
PACS:  42.50.Dv (Quantum state engineering and measurements)  
  03.65.Ud (Entanglement and quantum nonlocality)  
  42.50.Ar  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2004/V21/I2/0302
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