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Spectroscopic investigations of Eu3+:Y2SiO5 for quantum memory applications

Published inPhysical review. B, Condensed matter and materials physics, vol. 85, no. 11, p. 115111-115111/10
Publication date2012
Abstract

Rare-earth-ion-doped solids are promising materials as light-matter interfaces for quantum applications. Europium doped into an yttrium orthosilicate crystal in particular has interesting coherence properties and a suitable ground-state energy-level structure for a quantum memory for light. In this paper we report on spectroscopic investigations of this material from the perspective of implementing an atomic frequency comb (AFC)-type quantum memory with spin-wave storage. For this goal we determine the order of the hyperfine levels in the 7 F0 ground state and 5 D0 excited state, and we measure the relative strengths of the optical transitions between these levels. We also apply spectral hole burning techniques in order to prepare the system as a well-defined Λ system, as required for further quantum memory experiments. Furthermore, we measure the optical Rabi frequency on one of the strongest hyperfine transitions, a crucial experimental parameter for the AFC protocol. From this we also obtain a value for the transition dipole moment which is consistent with that obtained from absorption measurements.

Citation (ISO format)
LAURITZEN, Bjorn et al. Spectroscopic investigations of Eu<sup>3+</sup>:Y<sub>2</sub>SiO<sub>5</sub> for quantum memory applications. In: Physical review. B, Condensed matter and materials physics, 2012, vol. 85, n° 11, p. 115111–115111/10. doi: 10.1103/PhysRevB.85.115111
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ISSN of the journal1098-0121
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