Experimental demonstration of fractional orbital angular momentum entanglement of two photons.
The singular nature of a noninteger spiral phase plate allows easy manipulation of spatial degrees of freedom of photon states. Using two such devices, we have observed very high-dimensional spatial entanglement of twin photons generated by spontaneous parametric down-conversion.
Oemrawsingh
S S R
SS
Huygens Laboratory, Leiden University, Post Office Box 9504, 2300 RA Leiden, The Netherlands.
Ma
X
X
Voigt
D
D
Aiello
A
A
Eliel
E R
ER
't Hooft
G W
GW
Woerdman
J P
JP