Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 24: Poster: Quantum Optics and Photonics I
Q 24.7: Poster
Dienstag, 12. März 2019, 16:30–18:30, S Fobau Physik
High stability micro-cavity setup for quantum optics at low temperatures — •Thomas Hümmer1,2, Jonathan Noé3, Alexander Högele3, Theodor W. Hänsch1,2, and David Hunger4 — 1Ludwig-Maximilians-Universität München, Deutschland — 2Max-Planck Institut für Quantenoptik, Garching, Deutschland — 3Fakultät für Physik and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, München, Deutschland — 4Karlsruher Institut für Technologie, Karlsruhe, Deutschland
High-finesse, open-access, mechanical tunable, optical micro-cavities [1] offer a compelling system to enhance light matter interaction in numerous systems, e.g. for single-photon sources, quantum computation and spectroscopy of nanoscale solid-state systems. However, the advantages of the mechanical degrees of freedom, like coupling to different points of the sample with one and the same cavity, or fast and flexible tuning of the cavity resonance, bear also downsides. Especially in highly vibrating environments, like inside close-cycle cryostats, fluctuations of the cavity length on the picometer scale are often enough to detune the cavity resonance from a narrow transition in quantum emitters of interest. We present our approaches to a fully 3D-scannable, yet highly stable cavity setup which features at ambient conditions a passive stability on the femtometer scale. Furthermore, we present the progress of operating it at low temperatures inside a closed cycle cryostat. [1] Hunger et al., NJP 12, 065038 (2010)