EIT Amplitude Noise Spectroscopy: Experimental Results

We present~the results of~recent experimental tests of the hypothesis that the~electromagnetically induced transparency (EIT)~noise spectra in a Rb vapor illuminated by a free-running laser diode can be described in terms of a stochastic process~of~a pair of light field amplitudes.~Measured~EIT noise correlations~in~varied~post-cell polarization bases~are~understood in terms of a simple atomic quantum optical model. Amplitude noise correlators appear to be of utility for simplifying technology applications such as vector magnetometry with~a~warm atomic vapor.~