  We present a study of homodyne measurements of two-mode, vacuum-seeded,
quadrature-squeezed light generated by four-wave mixing in warm rubidium vapor.
Our results reveal that the vacuum squeezing can extend down to measurement
frequencies of less than 1 Hz, and the squeezing bandwidth, similar to the
seeded intensity-difference squeezing measured in this system, reaches up to
approximately 20 MHz for typical pump parameters. By dividing the squeezing
bandwidth into smaller frequency bins, we show that different sideband
frequencies represent independent sources of two-mode squeezing. Such frequency
bins may provide useful qumodes for quantum information processing experiments.
We also investigate the impact of group velocity delays on the correlations in
the system.
