Dresden 2011 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 23: Poster 2: Intersectional Session

Q 23.60: Poster

Tuesday, March 15, 2011, 18:00–21:00, P1

Correlation measurements on optical fields from a Whispering Gallery Mode Optical Parametric Oscillator — •Gerhard Schunk^1,2, Josef Fürst¹, Dmitry Strekalov^1,3, Michael Förtsch¹, Ulrik L. Anderson^1,4, Andrea Aiello¹, Christoph Marquardt¹, and Gerd Leuchs¹ — ¹Max Planck Institute for the Science of Light, Institute for Optics, Information and Photonics, University Erlangen-Nuremberg, Erlangen, Germany, — ²Institut für Quantenphysik, Universität Ulm, D-89069 Ulm, Germany — ³Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA — ⁴Department of Physics, Technical University of Denmark, Kgs. Lyngby, Denmark

The second order optical nonlinear process of parametric down conversion (PDC) has successfully been demonstrated in a z-cut Lithium Niobate whispering gallery mode (WGM) resonator. Inherently, PDC affects the quantum properties of the interacting fields, where squeezing and entanglement can be observed. PDC becomes very efficient, in particular as our WGM resonator provides a high Q-factor and small optical mode volume. This makes WGM resonators attractive for applications like Quantum Information Processing and quantum sensing.

Our present focus is to study and optimize the quantum properties of the signal and idler beams in our above threshold WGM optical parametric oscillator. For this goal we work on the improvement of the detector design and aim for further investigations of the parameter space accessible in our WGM setup. We will report on the latest results of the project.