Generation of Squeezing in Higher Order Hermite-Gaussian Modes with an   Optical Parametric Amplifier
  We demonstrate quantum correlations in the transverse plane of continuous wave light beams by producing -4.0 dB, -2.6 dB and -1.5 dB of squeezing in the TEM00, TEM10 and TEM20 Hermite- Gauss modes with an optical parametric amplifier, respectively. This has potential applications in quantum information networking, enabling parallel quantum information processing. We describe the setup for the generation of squeezing and analyze the effects of various experimental issues such as mode overlap between pump and seed and nonlinear losses. 
Mikael Lassen (DTU, ACQAO), Vincent Delaubert (LKB - Jussieu, ACQAO),   Charles C. Harb (ACQAO), Nicolas Treps (LKB - Jussie...