Abstract

The simplest spatial mode that can carry orbital angular momentum (OAM) is the first order Laguerre-Gaussian (LG) mode which produce either a left-handed or right-handed corkscrew-like phase front and a ring-like intensity profile. In this contribution we present quadrature entanglement between the two first-order LG modes thereby demonstrating a new type of entanglement from non-degenerate OPOs. The entanglement is manifested in the squeezing of the rotated modes in the Hermite-Gauss (HG) basis, measured with a specially tailored local oscillator.

© 2009 IEEE