Entanglement of a quantum optical elliptic vortex

We calculate the entanglement of a generalized elliptical vortex formed by quantized radiation field, using Wigner quasiprobability distribution function for such states. We find a critical squeezing parameter above which the entanglement is less for higher vorticity, which is counter intuitive.

► The measurement of entanglement for a generalized vortex.
► Parametric control of the entanglement.
► A counterintuitive result that shows less entanglement for high vorticity.