Non-classical behavior in multimode and disordered transverse structures in OPO
Roberta Zambrini; Stephen M. Barnett; Pere Colet; Maxi San Miguel
European Physical Journal D 22, 461-471 (2003)
We employ the Q representation to study the non-classical correlations that are present
from below to above-threshold in the degenerate optical parametric oscillator. Our study
shows that such correlations are present just above threshold, in the regime in which stripe patterns are formed, but that they also persist
further above threshold in the presence of spatially disordered structures.