Squeezed light effect

Richard E. Slusher, Arthur LaPorta, Philippe Grangier +1 more

S. Ast

Author: Ast, Stefan; Genre: Thesis; Published in Print: 2015; Open Access; Title: New approaches in squeezed light generation: Quantum states of light with GHz squeezing bandwidth and squeezed light generation via the cascaded Kerr effect

Ray LaPierre

Eyob Alebachew Sete, Hichem Eleuch, Sumanta Das

We present a study of semiconductor cavity QED effects with squeezed light. We investigate the effects of external squeezed light produced by a subthreshold optical parametric down conversion on the quantum features of the cavity as well as output radiation in the presence of exciton-exciton scattering. It turns out that the width of the spectrum of the cavity field strongly depends on the degree of squeezing. This effect is observed both in weak- and strong-coupling regimes. Moreover, we show that the external squeezed light has a profound effect on the amount of squeezing of the output field.

Harry Paul

Genta Masada

We aim to study quantum illumination using two-mode squeezed light. When quantum illumination is applied to outdoor radar applications, one of the light waves in the quantum entangled state is emitted toward the atmospheric disturbance. Therefore, it is extremely important to investigate the effect of atmospheric disturbance on the propagation characteristics and quantum nature of the lightwave. In this study, we focus on thermal fluctuations and air ow as atmospheric disturbances. First, the effect of atmospheric disturbance on the propagation characteristics and interferometry of light waves are investigated using laser light. Then, the effect of atmospheric disturbance on the quantum properties of single-mode squeezed light is investigated. We found that when the squeezed light passes through thermal fluctuations, the optical axis and intensity distribution are affected and the observed squeezing level fluctuates significantly. This may be due to the fact that the propagation of the squeezed light was affected by the thermal fluctuation and the interference efficiency with the local oscillator light fluctuated. On the other hand, when the squeezed light passed through the air ow, the propagation was affected very little. The observed squeezing levels remained almost unchanged.