Rostock 2019 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 24: Poster: Quantum Optics and Photonics I

Q 24.1: Poster

Tuesday, March 12, 2019, 16:30–18:30, S Fobau Physik

Fabrication of nanophotonic resonators for interfacing individual Erbium ions — •Andreas Gritsch, Lorenz Weiss, and Andreas Reiserer — Max Planck Institut of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching

Localized defect modes in photonic crystals form cavities which can combine Q-factors in the order of one million and sub-wavelength mode volumes resulting in unprecedented Purcell enhancement factors. We numerically design such photonic crystal cavities and fabricate them in one-dimensional silicon waveguides using electron beam lithography and reactive ion etching. Efficient off-chip coupling is achieved by evanescent couplers formed by wet-etched tapered optical fibers and tapered waveguide ends. Our devices can be transfered to the surface of suited Erbium-doped crystals to reduce the long lifetime (14ms) of the ions dramatically and guide the emitted photons efficiently. We present simulation data and fabrication results of our devices.