Abstract
We report experimental observation of three-field noise correlation between two coexisting four-wave mixing (FWM) signals and the probe signal in a coherently-prepared rubidium vapor system. The two FWM signals in a double-Λ type quasi-four-level atomic system are obtained in different directions via their respective phase- matching conditions and can be detected individually. These signals and the probe beam are found to be strongly correlated or anticorrelated with each other.
© 2011 Optical Society of America
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