From quantum to classical images

Gatti, A. and Lugiato, L. A. and Oppo, Gian Luca and Martin, Richard and Di Trapani, P. and Berzanskis, A. (1997) From quantum to classical images. Optics Express, 1 (1). pp. 21-30. ISSN 1094-4087 (

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We display the results of the numerical simulations of a set of Langevin equations, which describe the dynamics of a degenerate optical parametric oscillator in the Wigner representation. The scan of the threshold region shows the gradual transformation of a quantum image into a classical roll pattern. An experiment on parametric down-conversion in lithium triborate shows strikingly similar results in both the near and the far field, displaying qualitatively the classical features of quantum images.


Gatti, A., Lugiato, L. A., Oppo, Gian Luca ORCID logoORCID:, Martin, Richard ORCID logoORCID:, Di Trapani, P. and Berzanskis, A.;