Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 41: Poster: Quantum Optics and Photonics II
Q 41.41: Poster
Mittwoch, 13. März 2019, 16:15–18:15, S Fobau Physik
Harnessing path and polarization encoding in integrated photonic chips — •Leonardo Ruscio1,2, Eric Meyer3, Jan Dziewior1,2, Lukas Knips1,2, Jasmin Meinecke1,2, Alexander Szameit3, and Harald Weinfurter1,2 — 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany — 2Department für Physik, Ludwig-Maximilians-Universität, 80797 München, Germany — 3Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23, 18059 Rostock, Germany
Thanks to the low decoherence properties and the short times needed to transmit through optical circuits and channels, photons represent a promising physical system to be used in future quantum technologies. In this context, integrated photonic chips are important for miniaturizing and scaling up photonic quantum circuits. They already allowed observation of fundamental quantum interference phenomena such as quantum random walks and boson sampling. Modern quantum technologies require systems with a growing number of dimensions and complexity. Thus, the combined use of different degrees of freedom in integrated circuits will take full advantage of the photonic platform.
In this work, we experimentally harness polarization as well as path degrees of freedom of single photons. Laser written waveguides in fused silica are well suited for handling these simultaneously. We explore the use of entanglement and multi-photon quantum interference in an integrated quantum photonic chip, the feasibility of experimentally simulating dynamics in open quantum systems, and the effect of entanglement in boson sampling.