Abstract
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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