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Q: Fachverband Quantenoptik und Photonik

Q 40: Poster: Quantum Optics and Photonics III

Q 40.23: Poster

Dienstag, 6. März 2018, 16:15–18:15, Zelt West

Single Praseodymium Ions in the Solid State: Towards a Long-Lived Quantum Memory — •André Pscherer^1,2, Emanuel Eichhammer¹, Tobias Utikal¹, Stephan Götzinger^2,1, and Vahid Sandoghdar^1,2 — ¹Max Planck Institute for the Science of Light, D-91058 Erlangen, Germany — ²Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), D-91058 Erlangen

Rare earth ions embedded in solid state crystals are very attractive for quantum information processing due to their exceptionally long spin coherence time which can reach up to six hours [1]. Despite long fluorescence lifetimes, in the past years several groups have demonstrated the optical detection of single rare-earth ions at cryogenic temperatures by spatial or spectral selection [2]. However high resolution spectroscopy has revealed spectral diffusion as the main obstruction for quantum information processing at the single ion level. Here we report on our recent efforts to minimize spectral diffusion by reducing the crystal defect density and the temperature to superfluid helium.

• [1] M. Zhong, et al. Nature 517 (2015): 177 – 180.
• [2] T. Utikal, et al. Nature Communications 5 (2014): 3627.