X. Jiang, R. Wang, et al.
Physical Review Letters
The four-wave-mixing interactions produced by pumping at two well-separated frequencies can couple four different radiation modes to generate a new kind of squeezed state of light. A dual-frequency homodyne detection scheme is described and is used to observe this type of nonclassical correlation. Initial experimental results in an optical fiber show a noise level 20% below the vacuum noise level for the output of the dual-frequency detector, even though the noise at each individual detector remains above the vacuum level. © 1987 The American Physical Society.
X. Jiang, R. Wang, et al.
Physical Review Letters
M. Levenson, R.M. Shelby, et al.
CLEO 1985
R.M. Shelby, M. Levenson, et al.
Journal of the Optical Society of America B: Optical Physics
J. Hoffnagle, M.-P. Bernal, et al.
CLEO 1997