Consecutive quasi-synchronous interactions in nonlinear optics: New possibilities for generating nonclassical light

Jan Peřina, Concita Sibilia, Daniela Tricca +1 more

Optical parametric process occurring in a photonic-band-gap planar waveguide is studied from the point of view of nonclassical-light generation. Nonlinearly interacting optical fields are described by the generalized superposition of coherent signals and noise using the method of quantum linear corrections to a classical strong mean-field' solution. Scattered back-propagating fields are taken into account. The possibility to generate squeezed light and light with sub-Poissonian statistics in dependence on the strength of scattering, strength of nonlinear interaction, linear and nonlinear phase mismatches as well as characteristics of the states of optical fields incident on the waveguide is discussed in detail.

Gagik Yu. Kryuchkyan, Karen V. Kheruntsyan

Jan Peřina

Natalia Korolkova, Anatolii S Chirkin

An analysis is made of a new possibility of constructing a source of intense optical radiation with easily controlled quantum-statistical characteristics. The source is based on the interference between light waves that have passed through an anisotropic medium having a cubic nonlinearity. The role of the self-interaction and cross-interaction effects in the generation of light with nonclassical properties is identified.

Carlos Navarrete–Benlloch, Giuseppe Patera, Germán J. de Valcárcel

Synchronously pumped optical parametric oscillators (SPOPOs) are optical cavities driven by mode-locked lasers, and containing a nonlinear crystal capable of down-converting a frequency comb to lower frequencies. SPOPOs have received a lot of attention lately because their intrinsic multimode nature makes them compact sources of quantum correlated light with promising applications in modern quantum information technologies. In this work we show that SPOPOs are also capable of accessing the challenging and interesting regime where spontaneous symmetry breaking confers strong nonclassical properties to the emitted light, which has eluded experimental observation so far. Apart from opening the possibility of studying experimentally this elusive regime of dissipative phase transitions, our predictions will have a practical impact, since we show that spontaneous symmetry breaking provides a specific spatiotemporal mode with large quadrature squeezing for any value of the system parameters, turning SPOPOs into robust sources of highly nonclassical light above threshold.

Massimo Brambilla, F. Castelli, L. A. Lugiato +4 more