Four-photon interference with asymmetric beam splitters.
Two experiments of four-photon interference are performed with two pairs of photons from parametric downconversion with the help of asymmetric beam splitters. The first experiment is a generalization of the Hong-Ou-Mandel interference effect to two pairs of photons while the second one utilizes this effect to demonstrate a four-photon de Broglie wavelength of lambda/4 by projection measurement.
Liu
B H
BH
Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, China.
Sun
F W
FW
Gong
Y X
YX
Huang
Y F
YF
Guo
G C
GC
Ou
Z Y
ZY