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Journal of the Optical Society of America B

Simulation of pulsed squeezing in optical fiber with chromatic dispersion

Christopher Richard Doerr, Masataka Shirasaki, Farzana I. Khatri

Published Jan 1, 1994• 22 citations
Publisher

Abstract

Pulsed squeezing in lossless optical fiber with Kerr nonlinearity and chromatic dispersion is numerically simulated by the use of the linearization approximation. The formalism developed here allows us to predict squeezing for an arbitrary initial complex pulse envelope in a fiber with nonlinearity and dispersion. The results show that squeezing is not necessarily reduced by large temporal and spectral distortions of the pulse caused by dispersion and can even be enhanced in certain cases.

DOI
10.1364/josab.11.000143

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We propose a technique for generating momentum-squeezed states of optical pulses with a simple apparatus. An initial coherent state is launched into a dispersion-decreasing fiber, leading to pulse compression. The compressed pulse has a broader spectrum, but the average frequency of the pulse is fundamentally conserved by the Kerr effect. Although the momentum, or frequency, uncertainty of the pulse is not reduced, the final momentum uncertainty is below the coherent-state level with respect to the broadened output spectrum. The observable momentum uncertainty reflects photon correlations generated during the Kerr-effect scattering events. We discuss the basic characteristics of squeezing as well as the possibility of generating interesting quantum superposition states in an ideal lossless device.
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