Hannover 2020 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 22: Posters: Quantum Optics and Photonics II
Q 22.23: Poster
Dienstag, 10. März 2020, 16:30–18:30, Empore Lichthof
Towards cavity-enhanced single ion spectroscopy of Yb3+:Y2O3 — •Jannis Hessenauer1, Sören Bieling1, Tobias Krom1, Philippe Goldner2,3, and David Hunger1 — 1Karlsruher Institut für Technologie, Physikalisches Institut — 2Université PSL, Chimie ParisTech, CNRS — 3Sorbonne Université
Rare-earth ions are promising candidates for optically addressable spin qubits, owing to their long optical and spin coherence times. Yb3+ is of special interest among the rare earth ions due to its simple energy level scheme, comparably strong transition oscillator strength and its paramagnetic properties. An efficient spin-photon interface for quantum information technology requires the coupling of single ions to a high finesse cavity, which serves to enhance the transitions via the Purcell effect and to increase the emission into a single, well-collectible cavity mode. The goal of our experiment is to address single Yb3+ ions in Y2O3 nanoparticles (NPs) by placing them inside a high finesse fiber based Fabry-Pérot cavity at cryogenic temperatures. To characterize the nanoparticles, we perform ensemble spectroscopy in an all-fiber setup. For quick sample preparation, we investigate picking and placing of single NPs on the end facet of optical fibers. An external reference cavity is set up to stabilize the laser linewidth below the homogenous linewidth of Yb3+, which will enable selective addressing of single Yb3+ ions.