Quantum squeezing of optical dissipative structuresI. 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.
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