Hannover 2016 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 11: Poster: Quantum Optics and Photonics I

Q 11.35: Poster

Monday, February 29, 2016, 16:30–19:00, Empore Lichthof

Simulation of Kerr-Squeezing in Optical Fibers — •Jakob Studer, Oskar Schlettwein, Kai Barnscheidt, and Boris Hage — Arbeitsgruppe Experimentelle Quantenoptik, Institut für Physik, Universität Rostock, D-18059 Rostock, Germany

Squeezed states of light have many promising applications such as gravitational-wave detectors or optical communications. These states can be created by nonlinear processes in crystals or optical fibres.

One possibility is to utilise the optical Kerr effect, which is especially prominent for short pulses in optical fibres. The Kerr nonlinearity creates an arbitrary squeezed state which can be transformed into an amplitude-squeezed state and detected with various experimental methods. We develop a quasiclassical, probabilistic method to simulate such squeezing processes. For this purpose, the propagation of statistically distributed pulses through the fibre is numerically calculated using the Split-Step-Fourier method. Subsequently, the photon-number distribution after the propagation through the simulated setup is ana-lysed to evaluate the resulting amplitude-squeezing.

This method is demonstrated for two specific experimental setups which use optical fibres to create amplitude-squeezed light. Firstly, the squeezing in an asymmetric Sagnac interferometer and secondly the squeezing by spectral filtering of temporal solitons is investigated and compared to experimental results. At the current state, the simulation results show good qualitative and partial quantitative agreement to the experiments.