Hannover 2013 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 35: Poster I
Q 35.7: Poster
Tuesday, March 19, 2013, 16:00–18:30, Empore Lichthof
Distilling N00N-like Components of Two-Mode Quantum States of Light — •Falk Töppel1,2, Kirill Yu. Spasibko3, Timur Sh. Iskhakov1, Magdalena Stobińska4,5, Maria V. Chekohva1,2,3, and Gerd Leuchs1,2 — 1Max Planck Institute for the Science of Light, Günther-Scharowsky-Straße 1/Bldg. 24, 91058 Erlangen, Germany — 2Institute for Optics, Information and Photonics, Universität Erlangen-Nürnberg, Staudtstraße 7/B2, 91058 Erlangen, Germany — 3Department of Physics, M. V. Lomonosov Moscow State University, Leninskie Gory, 119991 Moscow, Russia — 4Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland — 5Institute of Theoretical Physics and Astrophysics, University of Gdańsk, 80-952 Gdańsk, Poland
The set of efficiently produced quantum states of light is limited. Particularly difficult to produce are non-classical non-Gaussian superpositions. Nevertheless, with quantum state engineering certain properties of accessible states can be modified. We propose a filter that diminishes the contributions of components with approximately equal population to a two-mode quantum state of light. In return, N00N-like contributions to the quantum state are enhanced. The main feature of our method is that it works symmetrically on components with different mode occupation and thus does preserve superpositions. Furthermore, the filter is especially suitable for macroscopic states of light and can be implemented easily with beam splitters and photon detectors only. We discuss its applications to several quantum states and present first experimental results on the filters working principle.