Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 11: Poster: Quantum Optics and Photonics I
Q 11.39: Poster
Montag, 29. Februar 2016, 16:30–19:00, Empore Lichthof
Optimizing the homodyne detection efficiency of a femtosecond PDC source — •Thomas Dirmeier1,2, Imran Khan1,2, Georg Harder3, Vahid Ansari3, Nitin Jain1,2,4, Birgit Stiller1,2, Ulrich Vogl1,2, Gerd Leuchs1,2,5, Christoph Marquardt1,2, and Christine Silberhorn2,3 — 1Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg, Germany — 2Max Planck Institute for the Science of Light, Erlangen, Germany — 3Applied Physics, Integrated Quantum Optics Group, University of Paderborn, Germany — 4Center for Photonic Communication and Computing, EECS Department, Northwestern University, Evanston, Illinois, USA — 5Department of Physics, University of Ottawa, Canada
The realization of quantum networks requires the ability to produce a large number of non-classical states from different sources that are able to easily interfere with each other. Parametric downconversion sources in ppKTP waveguides provide an efficient platform to produce such states in the telecommunication regime with a well-controlled mode structure. At the end of such a network, the receiver efficiency allows for the proper execution of quantum protocols. For a mode-sensitive homodyne detection scheme, this efficiency is mainly governed by the interferometric overlap in space and time between the measured signal and the local oscillator (LO) field. We show the progress on the pulse-to-pulse homodyne detection of different states generated in our engineered ppKTP waveguide source. Specifically, we investigate the influence of different temporal LO pulse shapes.