Abstract

There has been much interest in the generation of squeezed-slate light in χ⁽³⁾ media, such as squeezed-state generation in an atomic beam,¹ atomic vapor,² and optical fiber.³ However, in the case of atomic vapor, self-focusing was found to seriously limit the amount of squeezing.² In the case of optical fiber, guided acoustic noise (GAWBS noise) caused difficulties that bad to be circumvented through various methods, such as low-temperature cooling of fiber and careful balancing of a nonlinear Sagnac interferometer.³ Moreover, because of the low nonlinearity in optical fibers, a typical fiber length of 5-50 m had to be used.

© 1993 Optical Society of America