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Hannover 2020 – scientific programme

The DPG Spring Meeting in Hannover had to be cancelled! Read more ...

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Q: Fachverband Quantenoptik und Photonik

Q 22: Posters: Quantum Optics and Photonics II

Q 22.21: Poster

Tuesday, March 10, 2020, 16:30–18:30, Empore Lichthof

Towards Cavity-Enhanced Spectroscopy of Single Europium Ions in Yttria NanocrystalsTimon Eichhorn1, Kelvin Chung1, Sören Bieling1, •Tobias Krom1, Bernardo Casabone2,3, Julia Benedikter1,3,4, Thomas Hümmer3,4, Alban Ferrier5,6, Philippe Goldner5,6, Hugues De Riedmatten2,7, and David Hunger11Karlsruher Institut für Technologie — 2ICFO-Institut de Ciencies Fotoniques — 3Max-Planck-Institut für Quantenoptik — 4Fakultät für Physik, Ludwig-Maximilians-Universität — 5Université PSL, Chimie ParisTech, CNRS — 6Sorbonne Université — 7ICREA-Institució Catalana de Recerca i Estudis Avançats

A promising approach for realizing scalable quantum registers lies in the efficient optical addressing of qubits in a solid state host. Within the EU Quantum Flagship project SQUARE we tackle this problem by coupling the fluorescence of Eu3+ ions doped into Y2O3 nanoparticles (NPs) to a high-finesse fiber-based Fabry-Pérot microcavity. As a first step towards efficient readout of single rare earth ions, we present cavity-enhanced spectroscopy measurements of a few europium-ions as published in New J. Phys. 20 (2018) 095006. We furthermore report our efforts towards Purcell-enhanced single ion detection with high-resolution excitation spectroscopy. Therefore, we are currently setting up a reference cavity to narrow down the laser linewidth. Simultaneously we are working on a new method to place single NPs inside a passively stable, low-temperature fiber-fiber microcavity.

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