Two-photon anti-coalescence interference: The signature of two-photon entanglement
Department of Physics, Hong Kong Baptist
University - Hong Kong, PRC
2 Department of Physics, Beijing Normal University - Beijing 100875, PRC (Mailing address.)
Accepted: 4 August 2003
We study a general theory on the interference of two-photon wavepacket in a beam splitter. We find that the symmetry of the two-photon spectrum plays an important role in the manners of interference. We distinguish the coalescence and anti-coalescence interferences, and prove that the anti-coalescence interference is the signature of photon entanglement.
PACS: 42.50.Dv – Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements / 03.65.Ta – Foundations of quantum mechanics; measurement theory / 42.50.Ar – Photon statistics and coherence theory
© EDP Sciences, 2003