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Q: Fachverband Quantenoptik und Photonik
Q 24: Quantum Effects
Q 24.3: Poster
Dienstag, 15. März 2022, 16:30–18:30, P
Towards cavity-enhanced single ion spectroscopy of Yb3+:Y2O3 — •Jannis Hessenauer1, Diana Serrano2, Philippe Goldner2, and David Hunger1 — 1Karlsruher Institut für Technologie, Physikalisches Institut, Karlsruhe, Germany — 2Université PSL, Chimie ParisTech, CNRS, Paris, France
Rare-earth ions are promising candidates for optically addressable spin qubits, owing to their long optical and spin coherence times in the solid state. Yb3+ is of special interest amongst the rare earth ions due to its simple energy level scheme, strong transition oscillator strength and excellent coherence even at low magnetic fields [1]. An efficient spin-photon interface for quantum information technology requires the coupling of single ions to a high finesse cavity to enhance the transitions via the Purcell effect.
To that goal, we integrate nanocrystals into a fiber-based Fabry-Pérot microcavity by spincoating them on a planar mirror [2]. We characterize the nanocrystal distribution on a mirror via confocal microscopy and scanning cavity microscopy. We observe that long optical lifetimes and spectral features are preserved in nanocrystals. Finally, we present first results of cavity enhanced spectroscopy of Yb3+:Y2O3 at room temperature.
[1] Kindem, Jonathan M., et al. "Control and single-shot readout of an ion embedded in a nanophotonic cavity." Nature 580.7802 (2020): 201-204.
[2] Casabone, Bernardo, et al. "Cavity-enhanced spectroscopy of a few-ion ensemble in Eu3+: Y2O3." NJP 20.9 (2018): 095006.