Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 9: Photonics II
Q 9.7: Vortrag
Montag, 29. Februar 2016, 16:00–16:15, f342
Realization of Photonic Quantum Simulators with Direct Laser Writing — •Christina Jörg1, Fabian Letscher1,2, Michael Renner1, Michael Fleischhauer1, and Georg von Freymann1,3 — 1Department of Physics and State Research Center OPTIMAS, University of Kaiserslautern, Germany — 2Graduate School Materials Science in Mainz, Kaiserslautern, Germany — 3Fraunhofer-Institute for Physical Measurement Techniques IPM, Kaiserslautern, Germany
We present a new technique of manufacturing low-loss 3D waveguide arrays on a μm-scale, based on direct laser writing in negative photoresist. As hopping between atom sites corresponds to coupling of light between waveguides, these systems act as simulators for the electronic properties of solids. A hollow waveguide array is fabricated via 3D laserlithography. The structure is then infiltrated with a higher index material, creating waveguides of about 1 μm in diameter and spacing of 1.5 μm. By choosing appropriate infiltration materials the coupling constant between waveguides can be tuned. Coupling lengths of about 50 μm at propagation lengths of up to 500 μm could be obtained so far.
For straight waveguides arranged on a honeycomb-lattice the bulk modes as well as the static edge modes are observed. Using helical waveguides as in [1], a Floquet topological insulator with chiral edge modes can be realized.
[1] Rechtsman, M. C. et al. Photonic Floquet topological insulators. Nature 496, 196-200 (2013).