Hannover 2010 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 23: Quantum Effects: Light Scattering and Propagation II / QED I
Q 23.6: Talk
Wednesday, March 10, 2010, 12:00–12:15, A 320
Polarization noise in hollow-core photonic crystal fibers — •Wenjia Zhong1,2, Bettina Heim1,2, Dominique Elser1,2, Christoph Marquardt1,2, and Gerd Leuchs1,2 — 1Max-Planck-Institut für die Physik des Lichts, Erlangen — 2Institut für Optik, Information und Photonik, Universität Erlangen-Nürnberg, Erlangen
Thermally induced Brillouin scattering in glass fibers can lead to phase and polarization noise. Although this kind of noise is weak, it can degrade the purity of quantum states. In hollow-core photonic crystal fibers (HCPCFs), light is guided due to a photonic-bandgap structure consisting of a periodic array of air holes in silica glass. Since the light travels in the central air core, Brillouin scattering is supposed to be reduced as compared to a solid-core fiber. Still a precise characterization is necessary in order to estimate the influence of this noise in quantum experiments.We perform quantum-noise-limited measurements of polarization noise in a HCPCF considering several transverse modes of light.