Darmstadt 2008 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 56: Quanteninformation (Photonen und nichtklassisches Licht I)
Q 56.6: Talk
Friday, March 14, 2008, 12:15–12:30, 1A
Observation of polarization squeezing in PPKTP waveguides — Malte Avenhaus1, Maria Chekhova2, •Leonid Krivitsky1, Gerd Leuchs1, and Christine Silberhorn1 — 1University of Erlangen-Nurnberg, Institute for Optics Information and Photonics — 2M.V. Lomonosov Moscow State University
We study the experimental configuration of generation of polarization-squeezed states based on interference effect involving two nonlinear crystals. Our experiment represents a generalization of the well developed method of polarization-entangled state generation at the single photon level for the case of high parametric gain. The high gain regime is achieved by using an efficient source based on periodically poled KTP crystal waveguide pumped by a femtosecond laser. We show that the effect of polarization entanglement observed at a single photon level transforms in observation of polarization squeezing at a high gain regime.