Angular two-photon interference and angular two-qubit states.
Using angular-position-orbital-angular-momentum entangled photons, we study angular two-photon interference in a scheme in which entangled photons are made to pass through apertures in the form of double angular slits, and using this scheme, we demonstrate an entangled two-qubit state that is based on the angular-position correlations of entangled photons. The entanglement of the two-qubit state is quantified in terms of concurrence. These results provide an additional means for preparing entangled quantum states for use in quantum information protocols.
Jha
Anand Kumar
AK
Institute of Optics, University of Rochester, Rochester, New York 14627, USA.
Leach
Jonathan
J
Jack
Barry
B
Franke-Arnold
Sonja
S
Barnett
Stephen M
SM
Boyd
Robert W
RW
Padgett
Miles J
MJ