Stuttgart 2012 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 54: Poster 3
Q 54.69: Poster
Donnerstag, 15. März 2012, 16:30–19:00, Poster.I+II
Optimized waveguide arrays for multiple walker continuous-time quantum walks with integrated photon-pair creation — •Fabian Katzschmann1, Andreas Schreiber1,3, Aurél Gábris2, Craig Hamilton2, Igor Jex2, and Christine Silberhorn1,3 — 1Integrated Quantum Optics, Applied Physics, University of Paderborn, 33098 Paderborn, Germany — 2Department of Physics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Brehová 7, Prague 11519, Czech Republic — 3MPI for the Science of Light, IQO Group, Erlangen, Germany
Quantum walks enable the simulation of coherent procedures in nature, like the energy transport in photosynthesis, and they provide a platform for the realization of quantum algorithms and quantum computing schemes.
For this purpose we consider a multiple walker continuous-time quantum walk in periodically poled LiNbO3 waveguide arrays. In this process a pump field is coupled into a waveguide of the array to drive a PDC process generating photon-pairs, which subsequently perform a continuous-time quantum walk in our waveguide array. The phase matching conditions can be engineered through the periodic poling of the LiNbO3 crystal and tuned by the temperature of the device to switch from degenerate photon pairs to non-degenerate.
We report on the characterization and optimization of periodically poled LiNbO3 waveguide arrays used to implement an all optical multiple walker continuous-time quantum walk and present our current experimental results.