Spatial Multi-Mode Structure of Atom-Generated Squeezed Light

Abstract

We investigated the spatial distribution of quantum fluctuations in a squeezed vacuum field, generated via polarization self-rotation (PSR) interaction of an ensemble of Rb atoms and a strong near-resonant linearly polarized laser field. We found that the noise suppression is greatly effected by the transverse profile of a spatial mask, placed in both the squeezed field and the local oscillator, as well as its position along the focused beam near the focal point. These observations indicate the spatial multi-mode structure of the squeezed vacuum field. We have developed a theoretical model that describes the generation of higher-order Laguerre-Gauss modes as a result of PSR light-atom interaction. The prediction of this model are in a good qualitative agreement with the experimental measurements.

References in corpus (6)

• Quantum Optical Metrology -- The Lowdown on High-N00N States
• Quantum Enhanced Magnetometer with Low-Frequency Squeezing
• Polarization squeezing of light by single passage through an atomic vapor
• Numerical investigation of the quantum fluctuations of optical fields transmitted through an atomic medium
• Extracting Spatial Information from Noise Measurements of Multi-Spatial-Mode Quantum States
• Generating squeezed vacuum field with non-zero orbital angular momentum with atomic ensembles

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