Prabhakar, Shashi; Salla, Gangi Reddy; Aadhi, A.; Chithrabhanu, P.; Samanta, Goutam Kumar; Singh, Ravindra P.
(The opticale society (OAS), 2014-12)
Optical vortices, although being classical, have properties of two-mode entanglement present in quantum states. We have experimentally verified the violation of Bell's inequality using Wigner distribution function for such beams.