Improving quantum-noise reduction with spatially multimode squeezed light

Luigi A. Lugiato (1) , Philippe Grangier (2)

1 Dipartimento di Fisica dell'Università
2 Laboratoire Charles Fabry de l'Institut d'Optique / Optique quantique

We consider the squeezed vacuum state emitted by a degenerate optical parametric oscillator below threshold. We show, by using a confocal cavity and an appropriate matching lens, that the observed level of squeezing can become largely independent of the spatial intensity configuration of the local-oscillator field.

Domaines: Optique [physics.optics]

Luigi A. Lugiato, Philippe Grangier. Improving quantum-noise reduction with spatially multimode squeezed light. Journal of the Optical Society of America B, 1997, 14 (2), pp.225-231. ⟨10.1364/JOSAB.14.000225⟩. ⟨hal-00871013⟩