Stuttgart 2012 – wissenschaftliches Programm
Q 35.86: Poster
Mittwoch, 14. März 2012, 16:30–19:00, Poster.I+II
Efficient generation of squeezing by waveguided parametric downconversion — •Thomas Dirmeier1,2, Andreas Eckstein3, Nitin Jain1, Georg Harder3, Christoffer Wittmann1, Gerd Leuchs1, Christoph Marquardt1, and Christine Silberhorn3 — 1Max Planck Institute for the Science of Light, Guenther-Scharowsky-Str. 1, 91058 Erlangen, Germany — 2Institute for Optics Photonics and Information, University Erlangen-Nuremberg, Germany — 3Applied Physics, University of Paderborn, Warburgerstrasse 100, 33098 Paderborn, Germany
Biphoton sources based on parametric downconversion can be utilized as a reliable source of two-mode squeezed states with high brightness featuring reasonable squeezing values . Modern continuous variable experiments, e.g. the generation of Schrödinger kitten states rely on such sources of the highest quality. Using a single-mode potassium-titanyl-phosphate waveguide in single-pass configuration, we provide a compact and robust source of two-mode squeezed states. To quantify the quality of the squeezed states, we study the spectral and quantum properties of frequency-degenerate signal and idler photons. Matching the temporal and spectral modes of the signal and idler photons with those of a coherent local oscillator, we seek to measure the resulting squeezing with a homodyne detection scheme.
 A.Eckstein, et al., Phys. Rev. Lett. 106, 013603 (2011)