Quantum correlations by four-wave-mixing in atomic vapor. Theory and Experiments

摘要: We study both theoretically and experimentally the generation of quantum correlations in continuous variable regime by way four-wave mixing a hot atomic vapor. Two theoretical approaches have been developed. On one side, we under "classical" non-linear optics point view. In such obtain evolution equation for an ideal linear amplifier {\chi}^(3) medium. other present microscopic model with 4 levels double-{\Lambda} configuration to calculate coefficient vapor dressed laser. This calculation allows us derive spectra intensity noise interesting parameters. The experimental part this work describes demonstration effect on D1 line rubidium 85. measurement relative squeezing as high -9.2dB below standard limit, original where measured without amplification.These results broad applications field multimode optics, e.g. imaging or memories.