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Q: Fachverband Quantenoptik und Photonik

Q 23: Quanteninformation: Photonen II

Q 23.8: Vortrag

Dienstag, 3. März 2009, 15:45–16:00, VMP 6 HS-D

Noise properties of a whispering gallery mode resonator — •Christoph Marquardt¹, Dmitry Strekalov^1,2, Mikael Lassen¹, Dominique Elser¹, Ulrik L. Andersen^1,3, and Gerd Leuchs¹ — ¹Max-Planck-Institut für die Physik des Lichts, Institut für Optik, Information und Photonik, Universität Erlangen-Nürnberg, Günther-Scharowsky-Str. 1, Bau 24, 91058 Erlangen, Deutschland — ²Jet Propulsion Laboratory, California lnstitute of Technology, MS 296100, 4800 Oak Grove Drive, Pasadena,CA 91109-8099, USA — ³DTU Physics, Department of Physics, Technical University of Denmark, Building 309, 2800 Kgs. Lyngby, Dänemark

We investigate nonlinear interactions in a Lithium Niobate whispering gallery mode (WGM) resonator. The WGM resonator has very high Q-factors as well as small optical mode volume. This greatly enhances the effective nonlinearity. Therefore nonlinear processes become very efficient for very low optical powers and ultimately for individual photons, e.g. in second harmonic generation and parametric down-conversion. In this regime, the non-classical nature of the generated light fields is revealed. We present our latest results with frequency conversion and noise measurements.