Europhys. Lett.
Volume 74, Number 2, April 2006
Page(s) 247 - 253
Section Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics
Published online 15 March 2006
Europhys. Lett., 74 (2), pp. 247-253 (2006)
DOI: 10.1209/epl/i2005-10530-3

Quantum squeezing of optical dissipative structures

I. Pérez-Arjona1, 2, E. Roldán1 and G. J. de Valcárcel1

1  Departament d'Òptica, Universitat de València Dr. Moliner 50, 46100 Burjassot, Spain
2  Departament de Física Aplicada, Escola Politècnica Superior de Gandia Universitat Politècnica de València - Ctra. Natzaret-Oliva S/N 46730 Grau de Gandia, Spain

received 19 December 2005; accepted in final form 22 February 2006
published online 15 March 2006

We show that any optical dissipative structure supported by degenerate optical parametric oscillators contains a special transverse mode that is free from quantum fluctuations when measured in a balanced homodyne detection experiment. The phenomenon is not critical as it is independent of the system parameters and, in particular, of the existence of bifurcations. This result is a consequence of the spatial symmetry breaking introduced by the dissipative structure. Effects that could degrade the squeezing level are considered.

42.50.Lc - Quantum fluctuations, quantum noise, and quantum jumps.
42.65.Sf - Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics.

© EDP Sciences 2006