Phase transitions and the internal noise structure of nonlinear Schrödi nger equation solitons

Details Phase transitions and the internal noise structure of nonlinear Schrödi nger equation solitons Phase transitions and the internal noise structure of nonlinear Schrödi nger equation solitons

1999-04-29

arxiv.org/abs/quant-ph/9904104v1

Phys.Rev.Lett. 79 (1997) 4143-4146

Physics

Quantum Physics

10 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.79.4143

We predict phase-transitions in the quantum noise characteristics of systems described by the quantum nonlinear Schr\"odinger equation, showing them to be related to the solitonic field transition at half the fundamental soliton amplitude. These phase-transitions are robust with respect to Raman noise and scattering losses. We also describe the rich internal quantum noise structure of the solitonic fields in the vicinity of the phase-transition. For optical coherent quantum solitons, this leads to the prediction that eliminating the peak side-band noise due to the electronic nonlinearity of silica fiber by spectral filtering leads to the optimal photon-number noise reduction of a fundamental soliton.

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